identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
F81C9904AEC55BC8BE09EFB96F7F5540.text	F81C9904AEC55BC8BE09EFB96F7F5540.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (Crossotolejeunea) Spruce (Spruce 1884	<div><p>Lejeunea subg. Crossotolejeunea Spruce (Spruce 1884: 161)</p><p>Crossotolejeunea (Spruce) Schiffn. (Schiffner 1893: 127)</p><p>Type species</p><p>Lejeunea boryana Mont. (lectotype, designated by Vanden Berghen 1945).</p><p>Description</p><p>Plants mostly dioicous (in about 70 % of the analysed species). Oil bodies granular (very rarely homogeneous). Male bracteoles restricted to the base of the male spike or occurring throughout. Female bracts and bracteole free or shortly connate on one side (broadly fused on both sides in sect. Echinocolea). Asexual reproduction by specialized devices rather common, including caducous leaves (or leaf lobes), caducous branches, and strap-shaped gemmae. In addition, vegetative reproduction by shoot fragmentation occurs in several sections.</p><p>Distribution</p><p>Pantropical, with some species extending into temperate regions.</p><p>Species</p><p>Eighty three species were found to belong to this subgenus.</p><p>Notes</p><p>The typical characters of subg. Crossotolejeunea are the predominance of dioicy, granular oil bodies, female involucre free or only shortly fused at the base, and the common presence of specialized devices for asexual reproduction. The commonness of asexual reproduction in the subgenus may be explained by the predominantly dioicous sexual system, causing an impediment to sexual reproduction (Devos et al. 2011; Kraichak 2012).</p><p>Based on the results of the analyses, subg. Crossotolejeunea is subdivided into 11 sections: sect. Apolejeunea, sect. Crossotolejeunea, sect. Echinocolea, sect. Flavae, sect. Heterolejeunea, sect. Inflatolejeunea, sect. Minutilobae, sect. Nanolejeunea, sect. Papillolejeunea, sect. Sordidae, and sect. Xenantholejeunea.</p></div>	https://treatment.plazi.org/id/F81C9904AEC55BC8BE09EFB96F7F5540	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
508B518AF9EB5BCC890070341C3A6465.text	508B518AF9EB5BCC890070341C3A6465.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (Lejeunea) Lib.	<div><p>Lejeunea subg. Lejeunea</p><p>Lejeunea subg. Eulejeunea Spruce (Spruce 1884: 260), nom. inval. (ICN Art. 21.3, Turland et al. 2025)</p><p>? Amblyolejeunea Jovet-Ast (Jovet-Ast 1949: 49) – Type species: A. fulfordiae Jovet-Ast (= L. fulfordiae (Jovet-Ast) R. L. Zhu).</p><p>? Lejeunea subg. Pleurolejeunea R. M. Schust. &amp; Kachroo (Schuster 1963: 123) – Type species: L. patagonica Steph.</p><p>Type species</p><p>Lejeunea cavifolia (Ehrh.) Lindb.</p><p>Description</p><p>Plants mostly monoicous (in more than 80 % of the analysed species). Oil bodies granular or homogeneous. Gynoecial bracts usually broadly fused with the bracteole on both sides. Asexual reproduction by specialized devices usually absent.</p><p>Distribution</p><p>Pantropical, with some species extending into temperate regions.</p><p>Species</p><p>Forty-eight species were found to belong to this subgenus.</p><p>Notes</p><p>The typical characters of subg. Lejeunea are the predominantly monoicous sexuality, the usually broadly connate female bracts and bracteole, and the scarcity of specialized devices for asexual reproduction. Based on the molecular phylogenetic, morphological, and nomenclatural evidence, subg. Lejeunea is subdivided into four sections: sect. Glaucescentes, sect. Lamacerinae, sect. Lejeunea, and sect. Macrolejeunea.</p><p>Amblyolejeunea, a monospecific neotropical genus characterized by undivided underleaves and eplicate perianths without beak, and L. subg. Pleurolejeunea, a group of species characterized by gynoecia on abbreviated branches without innovations and with long 5 - keeled perianths, are tentatively placed in synonymy of subg. Lejeunea because of the broadly connate female involucre in the two groups, autoicy, and the absence of specialized devices for asexual reproduction. A molecular phylogenetic analysis of the two groups and a study of the oil bodies should be carried out to verify their taxonomic relationship. Interestingly, one of the members of subg. Pleurolejeunea, L. syoshii Inoue, has homogeneous oil bodies (Inoue 1977), suggesting an affinity to sect. Lejeunea .</p></div>	https://treatment.plazi.org/id/508B518AF9EB5BCC890070341C3A6465	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
416BBD5E0D5E5B548F5029DD39B8E035.text	416BBD5E0D5E5B548F5029DD39B8E035.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Apolejeunea) (Inoue) R. M. Schust.	<div><p>[Clade X] Lejeunea sect. Apolejeunea (Inoue) R. M. Schust. (Schuster 1980: 941)</p><p>Lejeunea subg. Apolejeunea Inoue (Inoue 1976: 186)</p><p>Type species</p><p>Lejeunea compacta (Steph.) Steph.</p><p>Description</p><p>Plants frequently rather small, less than 1 mm wide. Stems with 8–22 rows of medullary cells. Leaves asymmetrically ovate with widely arched dorsal margin and straight to slightly curved ventral margin, leaf apex narrowly pointed or rounded, usually decurved. Cuticle finely punctate-papillose. Oil bodies finely granular, 2–8 per cell. Lobules large, 1 / 3–1 / 2 × leaf length, strongly inflated. Androecia usually with an apical innovation; bracteoles present throughout the male spike. Gynoecia on long shoots, with one sterile innovation, bracts shortly fused with the bracteole at the base. Perianths 5 - keeled in the upper half, beak very short. Asexual reproduction by specialized devices absent.</p><p>Distribution</p><p>East Asia.</p><p>Species</p><p>Lejeunea compacta, L. curviloba Steph. (?), L. neelgherriana Gottsche (= L. claviflora (Steph.) S. Hatt.), L. nepalensis Steph., L. parva (S. Hatt.) Mizut., L. soae R. L. Zhu, Y. M. Wei, L. Söderstr., A. Hagborg &amp; von Konrat, L. wightii Lindenb.</p><p>Notes</p><p>The outstanding characters of this section are the rather small plants with asymmetric leaf lobes and a pointed (or rounded), decurved leaf apex, the rather large, inflated lobules and the presence of bracteoles throughout the male spike. The common presence of an apical innovation on the male spike is a further characteristic feature seen in some members of this section (Mizutani 1992).</p><p>Lejeunea curviloba was resolved in an unsupported sister position to the Apolejeunea clade and is provisionally placed in sect. Apolejeunea because of its close morphological similarity to members of this section (Mizutani 1992).</p><p>References</p><p>Mizutani (1961, 1992), Inoue (1976), Schuster (1980).</p></div>	https://treatment.plazi.org/id/416BBD5E0D5E5B548F5029DD39B8E035	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
6F64BC190A2F52FA81107B9E441446D8.text	6F64BC190A2F52FA81107B9E441446D8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Crossotolejeunea) Spruce	<div><p>[Clade VI] Lejeunea sect. Crossotolejeunea Spruce (Spruce 1884: 161)</p><p>Crossotolejeunea (Spruce) Schiffn. (Schiffner 1893: 127)</p><p>Type species</p><p>Same as for subg. Crossotolejeunea .</p><p>Description</p><p>Plants autoicous, dull green. Stems with 7–20 rows of medullary cells. Leaf lobes with a broad base, dorsal leaf surface smooth, leaf margin entire or crenulate, outer wall of margin cells thin. Cuticle densely and rather coarsely papillose. Oil bodies finely granular, 2–8 per cell, colourless. Male bracteoles restricted to the base of the male spike. Gynoecial innovations are sterile or fertile. Perianths inflated, 4–5 - keeled, keels ± 2 - winged, crenate to ciliate-laciniate. Asexual reproduction by strap-shaped gemmae.</p><p>Distribution</p><p>Neotropical.</p><p>Species</p><p>Lejeunea boryana, L. controversa Gottsche, L. pulverulenta (Steph.) M. E. Reiner.</p><p>Notes</p><p>The autoicous plants with a densely papillose cuticle and crenate to ciliate-laciniate, ± 2 - winged perianth keels are typical characters of this section. In its original circumscription (e. g. Spruce 1884; Stephani 1913), Crossotolejeunea contained almost 40 species, including numerous autoicous ones, but most of them have a smooth cuticle and proved to belong to other sections of Lejeunea, especially sect. Lamacerinae.</p><p>Reference</p><p>Reiner-Drehwald and Goda (2000).</p></div>	https://treatment.plazi.org/id/6F64BC190A2F52FA81107B9E441446D8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
FFE8D98C7DFF55EDBEAF4F1E3B59141A.text	FFE8D98C7DFF55EDBEAF4F1E3B59141A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Echinocolea) (R. M. Schust.) Gradst.	<div><p>[Clade V] Lejeunea sect. Echinocolea (R. M. Schust.) Gradst. (Gradstein 2018: 7)</p><p>Echinocolea R. M. Schust. (Schuster 1963: 125)</p><p>Type species</p><p>Lejeunea asperrima Spruce.</p><p>Description</p><p>Plants very delicate, less than 1 mm wide. Stems with only 3–7 rows of medullary cells. Leaf lobes with a very narrow base (abruptly dilated beyond the keel), dorsal leaf surface and margins with projecting, often spinose mammillae with thickened outer walls. Cuticle smooth. Oil bodies finely granular, few (1–4) per cell, often brownish. Gynoecia with one sterile or fertile innovation, bracts and bracteole broadly connate. Perianths inflated, 5 - keeled, keels crenate to ciliate-laciniate. Asexual reproduction by caducous leaves, cladia, and strap-shaped gemmae.</p><p>Distribution</p><p>Neotropical.</p><p>Species</p><p>Lejeunea asperrima, L. subspathulata Spruce.</p><p>Further species (not sequenced)</p><p>Lejeunea asprella Spruce, L. meridensis Ilk. - Borg.</p><p>Notes</p><p>Lejeunea sect . Echinocolea is a robust lineage, being sister to sect. Crossotolejeunea and sharing ciliate-laciniate perianths and finely granular oil bodies with the latter section. The section differs from sect. Crossotolejeunea in the much smaller plants with leaf lobes narrowed at the base and ornamented on the dorsal surface and margins, a smooth cuticle, and an abundance of modes of vegetative reproduction. Unexpectedly, L. reinerae from eastern Malesia, the only paleotropical species of Lejeunea with a roughened dorsal leaf surface and having been placed in Echinocolea in the past, was not resolved in sect. Echinocolea despite its close similarity to L. asperrima (Ilkiu-Borges 2005) . Instead, the species was found in subg. Crossotolejeunea in a moderately supported sister relationship to L. patersonii from Malesia. The latter species approaches L. reinerae in having strongly crenulate leaf margins, but the dorsal leaf surface of L. patersonii is smooth, the leaf base is not highly narrow, and the outer walls of the projecting leaf margin cells are not thickened. The position of L. reinerae in the sect. Crossotolejeunea clade indicates that the peculiar leaf shape and ornamented leaf surface of sect. Echinocolea are homoplasious characters.</p><p>Reference</p><p>Ilkiu-Borges (2005).</p></div>	https://treatment.plazi.org/id/FFE8D98C7DFF55EDBEAF4F1E3B59141A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
C51BD9C7C3AE5058A11410D3820FB765.text	C51BD9C7C3AE5058A11410D3820FB765.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Flavae) R. M. Schust.	<div><p>[Clade XI] Lejeunea sect. Flavae R. M. Schust. (Schuster 1980: 941)</p><p>Nesolejeunea Herzog (Herzog 1947: 327) – Type species: N. intercalaris Herzog (= L. acuta Mitt.).</p><p>Type species</p><p>Lejeunea flava (Sw.) Nees.</p><p>Description</p><p>Plants prostrate, glossy yellowish green, autoicous or dioicous. Stems with ca 10–16 rows of medullary cells. Leaves symmetrically ovate, apex usually rounded, rarely acute ( L. acuta). Leaf cells with distinct trigones and intermediate thickenings. Cuticle mostly smooth, occasionally roughened by wax crystals. Oil bodies finely granular, 2–10 per cell. Lobules small, ca 1 / 4 × leaf length. Underleaves rather large, 3–6 × stem width, frequently imbricate. Male bracteoles restricted to the base of the male spike (exceptionally present throughout: L. brenanii E. W. Jones). Gynoecial innovations usually fertile but not repeatedly, with up to 2 gynoecia in a row. Perianths with 5 ± smooth keels, rarely eplicate ( L. ramosissima Steph.). Asexual reproduction by specialized devices absent.</p><p>Distribution</p><p>Pantropical; centre of species diversity in tropical Africa (Jones 1968).</p><p>Species</p><p>Lejeunea acuta, L. brenanii, L. flava, L. isophylla E. W. Jones, L. lomana E. W. Jones, L. ramosissima Steph., L. tuberculosa Steph.</p><p>Notes</p><p>The main characters of sect. Flavae are the rather unspecialized, prostrate, glossy yellowish-green plants with rather large underleaves (3–6 × stem width), leaf cells with distinct trigones, finely granular oil bodies, and 5 - keeled perianths with ± smooth keels.</p><p>References</p><p>Jones (1968), Schuster (1980), Wigginton (2004).</p></div>	https://treatment.plazi.org/id/C51BD9C7C3AE5058A11410D3820FB765	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
3A2364E93D5A5980B5DBCA079A0AC2CC.text	3A2364E93D5A5980B5DBCA079A0AC2CC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Glaucescentes) R. M. Schust.	<div><p>[Clade II] Lejeunea sect. Glaucescentes R. M. Schust. (Schuster 1980: 1001)</p><p>Lejeunea subg. Taxilejeunea Spruce (Spruce 1884: 212) – Type species: L. pterigonia (Lehm. &amp; Lindenb.) Mont. (lectotype, designated by Jones 1967).</p><p>Sphaerolejeunea Herzog (Herzog 1938: 88) – Type species: S. umbilicata Herzog.</p><p>? Lejeunea subg. Neopotamolejeunea (M. E. Reiner) Gradst. &amp; M. E. Reiner (Gradstein and Reiner-Drehwald 2007: 487) – Type species: L. juruana Gradst. &amp; M. E. Reiner.</p><p>Type species</p><p>Lejeunea glaucescens Gottsche.</p><p>Description</p><p>Plants mostly autoicous (occasionally dioicous). Stem epidermis as in sect. Macrolejeunea. Oil bodies granular (homogeneous in L. aquatica and L. topoensis). Gynoecial innovations present and usually repeatedly fertile, with 2–10 gynoecia in a row. Perianths eplicate or shortly plicate, keels smooth or toothed. Asexual reproduction by specialized devices absent.</p><p>Distribution</p><p>Pantropical.</p><p>Species</p><p>Lejeunea aquatica Horik., L. conformis Nees &amp; Mont., L. debilis (Lehm. &amp; Lindenb.) Nees &amp; Mont., L. drehwaldii Heinrichs &amp; Schäf. - Verw., L. eifrigii Mizut., L. flaccida Lindenb. &amp; Gottsche (= L. obtusangula Spruce), L. furcicornuta (Grolle) G. E. Lee &amp; Pócs, L. glaucescens Gottsche, L. pterigonia (Lehm. &amp; Lindenb.) Mont., L. serpillifolioides (Raddi) Gradst. (= L. isocalycina (Nees) Prantl), L. sulphurea (Lehm. &amp; Lindenb.) Spruce, L. terricola Spruce, L. topoensis Gradst. &amp; M. E. Reiner, Lejeunea sp. 1 . (= “ L. sikorae (Steph.) Steph. ”, Figs 5, 6).</p><p>Notes</p><p>This section contains many former members of the genus Taxilejeunea, a group of species with elaborate stems made up of highly enlarged epidermis cells and rather numerous medullary cell rows, and with repeatedly fertile innovations resulting in gynoecia and perianths arranged in rows of 2–10 gynoecia. Underleaves vary considerably in size, and some species have very large and strongly auriculate underleaves. The position of L. drehwaldii in sect. Glaucescentes is somewhat unexpected as it differs from other members of this section in having leaves bordered by hyaline cells and sterile or no innovations. The aberrant morphology of the species, which was previously placed in a separate genus, Sphaerolejeunea, is reflected by its position on a long, although unsupported branch.</p><p>The position of L. aquatica and L. topoensis in the Glaucescentes clade is unexpected as these species have homogeneous oil bodies characteristic of sect. Lejeunea . Moreover, L. aquatica is very similar to L. japonica, a member of sect. Lejeunea, differing from the latter only in smaller lobules, slightly thick-walled stem cells, and the semi-aquatic habitat (Mizutani 1961). The latter characters, seen also in L. topoensis, are usually interpreted as adaptations to the riverine habitat (e. g. Gradstein and Reiner-Drehwald 2007). Further study including the type of the rheophilous subgenus Neopotamolejeunea to which L. topoensis has been assigned, are needed to clarify the taxonomic position of these two riverine Lejeunea species.</p><p>References</p><p>Reiner-Drehwald and Drehwald (2002), Gradstein and Reiner-Drehwald (2007), Bastos and Gradstein (2020), Gradstein (2021).</p></div>	https://treatment.plazi.org/id/3A2364E93D5A5980B5DBCA079A0AC2CC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
ADBF30D8474A54ECAD6BD8B025459D83.text	ADBF30D8474A54ECAD6BD8B025459D83.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Heterolejeunea) (R. M. Schust.) G. E. Lee & Gradst.	<div><p>[Clade VII] Lejeunea sect. Heterolejeunea (R. M. Schust.) G. E. Lee &amp; Gradst. comb. et stat. nov.</p><p>Rectolejeunea subg. Heterolejeunea R. M. Schust. (Schuster 1955: 122)</p><p>Dicladolejeunea R. M. Schust. (Schuster 1962: 68) – Type species: D. anomala R. M. Schust. (= L. rotundifolia Mitt.).</p><p>Lejeunea subg. Chaetolejeunea (R. M. Schust.) R. M. Schust. (Schuster 1962: 68) – Type species: L. setacea Steph.</p><p>Stylolejeunea Sim (Sim 1926: 67) – Type species: S. duncaniae Sim (= L. duncaniae (Sim) M. E. Reiner).</p><p>Type species</p><p>Lejeunea phyllobola Nees &amp; Mont.</p><p>Description</p><p>Plants dull green, rarely glossy. Vegetative branches Lejeunea - type, occasionally Radula - type. Stem epidermis cells ca 2–3 times larger than medullary cells, rarely strongly inflated; medullary cell rows few, usually 4–7. Leaf cells with small trigones, with or without intermediate cell wall thickenings. Lobules sometimes with a very long tooth. Oil bodies granular, 2–10 per cell, colourless, relatively large, up to 20 µm long and sometimes fill the entire cell lumen. Male bracteoles restricted to the base of the male spike or present throughout. Gynoecial innovations usually fertile. Perianths often compressed, with 5 smooth keels. Asexual reproduction common, by strap-shaped gemmae, caducous leaves and branches.</p><p>Distribution</p><p>Afro-American.</p><p>Species</p><p>Lejeunea deplanata Nees, L. kuerschneriana Pócs, L. oligoclada Spruce, L. parviloba Ångstr. (= L. tapajosensis Spruce), L. phyllobola Nees &amp; Mont., L. ptosimophylla C. Massal., L. rotundifolia Mitt., L. ruthii (A. Evans) R. M. Schust., L. subplana (Steph.) C. J. Bastos, L. trinitensis Lindenb.</p><p>Further species (not sequenced)</p><p>Lejeunea duncaniae, L. evansiana (R. M. Schust.) Schäf. - Verw., L. rionegrensis Spruce, L. setacea, L. spiniloba Lindenb. &amp; Gottsche.</p><p>Notes</p><p>Characteristic of sect. Heterolejeunea are the rather dull green, dioicous plants with ± compressed perianths and frequent occurrence of vegetative reproduction. The position of L. rotundifolia in the section is somewhat unexpected, standing out by its large size with stems to 8 cm long and made up of 11–18 rows of epidermal cells and 22–55 rows of medullary cells, with 4–6 cells wide ventral merophytes. Previously, the species was placed in a separate genus, Dicladolejeunea . Interestingly, L. rotundifolia occasionally produces vegetative branches of the Radula - type. The latter character is very rare in Lejeunea and is otherwise seen in L. deplanata and L. phyllobola, both in the same section.</p><p>References</p><p>Schuster (1980), Reiner-Drehwald (2005 b, 2010 a), Bastos and Gradstein (2020).</p></div>	https://treatment.plazi.org/id/ADBF30D8474A54ECAD6BD8B025459D83	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
F1FFDFB269845CB79E0EB3BFBC740786.text	F1FFDFB269845CB79E0EB3BFBC740786.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Inflatolejeunea) (S. W. Arnell) G. E. Lee & Gradst.	<div><p>[Clade VIII] Lejeunea sect. Inflatolejeunea (S. W. Arnell) G. E. Lee &amp; Gradst. comb. et stat. nov.</p><p>Inflatolejeunea S. W. Arnell (Arnell 1953: 173)</p><p>Type species</p><p>Lejeunea capensis Gottsche.</p><p>Description</p><p>Plants glossy pale green, delicate, ca 0.5–1 mm wide. Stems with 7 rows of epidermal cells surrounding 5–12 rows of smaller medullary cells. Leaf cells with rather small trigones, with or without intermediate cell wall thickenings. Cuticle punctate-papillose. Oil bodies finely granular, ca 3–10 per cell, colourless. Male bracteoles restricted to the base of the male spike or absent. Gynoecial innovations frequently fertile. Perianths terete, eplicate. Asexual reproduction sometimes occurs by shoot fragmentation ( L. globosiflora).</p><p>Distribution</p><p>Afro-American.</p><p>Species</p><p>Lejeunea capensis, L. cyathophora Mitt., L. globosiflora (Steph.) Steph.</p><p>Further species (not sequenced)</p><p>Lejeunea pluridichotoma Schust., nom. inval.</p><p>Notes</p><p>The small, glossy, greenish plants with a finely punctate-papillose cuticle, granular oil bodies and inflated, eplicate perianths are characteristic of sect. Inflatolejeunea . Although oil bodies in the section are usually described as being finely granular, Jungermannia - type (Arnell 1963; Schuster 1992; Gradstein and Cuvertino 2015), Reiner-Drehwald and Schäfer-Verwimp (2008) reported subhomogeneous oil bodies in L. capensis . As Jungermannia - type oil bodies may turn homogeneous upon degeneration following drying of the plants (Gradstein et al. 2001), the report of subhomogeneous oil bodies in L. capensis may have been based on degenerated oil bodies.</p><p>References</p><p>Arnell (1963), Schuster (1992), Reiner-Drehwald and Schäfer-Verwimp (2008), Gradstein and Cuvertino (2015).</p></div>	https://treatment.plazi.org/id/F1FFDFB269845CB79E0EB3BFBC740786	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
875EADD5A1C95917824F08A769B5CE5B.text	875EADD5A1C95917824F08A769B5CE5B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Lamacerinae) R. M. Schust.	<div><p>[Clade III] Lejeunea sect. Lamacerinae R. M. Schust. (Schuster 1980: 967)</p><p>Dactylolejeunea R. M. Schust. (Schuster 1970: 341) – Type species: D. acanthifolia R. M. Schust. (= L. paucidentata (Steph.) Grolle).</p><p>Type species</p><p>Lejeunea lamacerina (Steph.) Schiffn.</p><p>Description</p><p>Plants autoicous, delicate, usually less than 1 mm wide. Stem epidermis cells ca 2 times or less larger than medullary cells, not strongly bulging outwards, medullary cells in 4–20 rows. Cuticle smooth, rarely punctate-papillose. Oil bodies finely to coarsely granular, 3–10 per cell, relatively large. Gynoecial innovations sterile (rarely fertile). Perianths usually 5 - keeled, keels frequently 2 - winged and crenate (by mammillose cells) to toothed, dentate-ciliate. Asexual reproduction by specialized devices usually absent (by ribbon-like gemmae in L. pulchriflora).</p><p>Distribution</p><p>Tropical America, Europe, and eastern North America; one species, L. pulchriflora, in the Paleotropics.</p><p>Species</p><p>Lejeunea bermudiana (A. Evans) R. M. Schust., L. corynantha Spruce, L. cristulata (Steph.) M. E. Reiner &amp; Goda, L. grossitexta (Steph.) M. E. Reiner &amp; Goda, L. intricata Prantl, L. laeta (Lehm. &amp; Lindenb.) Lehm. &amp; Lindenb., L. lamacerina (Steph.) Schiffn., L. paucidentata (Steph.) Grolle, L. pulchriflora (Pearson) G. E. Lee, Bechteler, Pócs, Schäf. - Verw. &amp; Heinrichs, L. sporadica Besch. &amp; Spruce, L. urbanii (Steph.) Steph.</p><p>Further species (not sequenced)</p><p>Lejeunea patens Lindb.</p><p>Notes</p><p>Typical of sect. Lamacerinae are the delicate, autoicous plants with crenate to dentate-ciliate, 2 - winged perianth keels, a usually smooth cuticle (finely punctate-papillose only in L. intricata and L. pulchriflora), granular oil bodies, and sterile innovations. Lejeunea corynantha deviates by its eplicate perianth but otherwise fits the section well morphologically. The European L. patens is placed in this section based on its granular oil bodies and its close similarity to L. lamacerina .</p><p>Section Lamacerinae is morphologically very similar to sect. Microlobae (subg. Crossotolejeunea), but the perianths in the latter section are not 2 - winged.</p><p>References</p><p>Schuster (1980), Paton (1999), Reiner-Drehwald and Goda (2000), Reiner-Drehwald and Schäfer-Verwimp (2008), Lee et al. (2016), Bastos and Gradstein (2020).</p></div>	https://treatment.plazi.org/id/875EADD5A1C95917824F08A769B5CE5B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
E52A876511975B8EBF4FBFD400C5307C.text	E52A876511975B8EBF4FBFD400C5307C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Lejeunea) Lib.	<div><p>[Clade IV] Lejeunea sect. Lejeunea</p><p>Lejeunea sect. Cladiophorae R. M. Schust. (Schuster 1980: 995) – Type species: L. cladiophora (R. M. Schust.) R. M. Schust. (= L. cancellata Nees &amp; Mont.).</p><p>? Lejeunea subg. Pleurolejeunea R. M. Schust. (Schuster 1963: 123) – Type species: L. patagonica (Steph.) Steph.</p><p>Amphilejeunea R. M. Schust. (Schuster 1978: 431) – Type species: A. viridissima R. M. Schust. (= L. catinulifera Spruce).</p><p>Ciliolejeunea S. W. Arnell (Arnell 1953: 176) – Type species: C. capensis S. W. Arnell (= L. villaumei (Steph.) Grolle).</p><p>Cladolejeunea Zwickel (Zwickel 1933: 112) – Type species: Ceratolejeunea aberrans Steph. (= L. gradsteiniana Pócs).</p><p>Cryptogynolejeunea R. M. Schust. (Schuster 1994: 215) – Type species: C. reflexistipula (Lehm. &amp; Lindenb.) R. M. Schust. (= L. reflexistipula (Lehm. &amp; Lindenb.) Lehm. &amp; Lindenb.).</p><p>Oryzolejeunea (R. M. Schust.) R. M. Schust. (Schuster 1992: 249) – Type species: O. antillana (R. M. Schust.) R. M. Schust. (= L. herminieri (Steph.) R. L. Zhu).</p><p>Lejeunea sect. Cavifoliae R. M. Schust. (Schuster 1957: 142), nom. inval. – Type species: same as for genus Lejeunea .</p><p>Type species</p><p>Lejeunea cavifolia (Ehrh.) Lindb.</p><p>Description</p><p>Plants mostly autoicous (occasionally dioicous), glossy green, slightly altered by drying. Stem epidermis cells ca 2–4 times larger than medullary cells, not strongly bulging outwards; medullary cells in 4–16 rows (exceptionally, in L. reflexistipula, epidermis cells strongly bulging outwards, ca 6 times larger than inner cells, and medullary cell rows more numerous, 19–40). Cuticle smooth or punctate-papillose, oil bodies homogeneous, ca 10–30 per cell. Underleaves bifid or undivided. Gynoecial innovations sterile or fertile, with up to two gynoecia in a row. Perianths equally 5 - keeled, keels usually long, extending to the lower half of the perianth, often winged or with appendices (horns, teeth, tuberculae). Asexual reproduction by specialized devices usually absent (by caducous branches in L. cancellata).</p><p>Distribution</p><p>Pantropical and extending into temperate regions of the Northern and Southern Hemisphere.</p><p>Species</p><p>Lejeunea alata Gottsche, L. amaniensis E. W. Jones, L. cancellata, L. caripensis Lindenb. &amp; Gottsche (= L. cerina auct. non (Lehm. &amp; Lindenb.) Lehm. &amp; Lindenb.), L. catinulifera, L. cavifolia, L. drummondii Taylor, L. eckloniana Lindenb., L. geisslerae Pócs, L. helmsiana (Steph.) Steph., L. herminieri, L. holtii Spruce, L. japonica Mitt., L. obscura Mitt., L. oracola M. A. M. Renner, L. perichymidia M. A. M. Renner (= L. epiphylla Colenso), L. puiggariana Steph., L. reflexistipula, L. sharpii (R. M. Schust.) R. M. Schust., L. subsessilis Spruce (= L. monimiae (Steph.) Steph.), Lejeunea sp. 2 . (= “ L. caracensis Lindenb. ”, Figs 5, 6).</p><p>Further species (not sequenced)</p><p>Lejeunea cyathearum E. W. Jones, L. gradsteiniana Pócs, L. villaumei (Steph.) Grolle.</p><p>Notes</p><p>The typical character of sect. Lejeunea, separating it from most other sections of Lejeunea, are the small, homogeneous, Massula - type oil bodies, ca 10–30 per cell. In other sections, oil bodies are usually granular, being built of very small to large granules, and less than 10 per cell. Further characters of sect. Lejeunea are the thin stems with only 4–12 medullary cell rows (exceptionally more cell rows in L. reflexistipula) and the occasional occurrence of two lobule teeth, with the first tooth being more than one cell long, and undivided underleaves ( L. catinulifera, L. herminieri, L. reflexistipula). Lejeunea herminieri, type species of Oryzolejeunea, was not sequenced in this study and is placed in this section based on Ye et al. (2013) who sequenced it and found that the species was sister to L. catinulifera . Both have homogeneous oil bodies.</p><p>Lejeunea holtii has long been considered a synonym of L. eckloniana (Söderström et al. 2002) . However, the position of L. holtii on a long branch within the L. eckloniana species group and its distinctive morphology (Hodgetts et al. 2024), suggests that it may be a distinct taxon. The species is accepted here pending further work on its taxonomic status. Lejeunea cyathearum, L. gradsteiniana, and L. villaumei from Africa were not sequenced and are placed in sect. Lejeunea based on their homogeneous oil bodies and close similarity to L. eckloniana (Jones 1974) .</p><p>References</p><p>Jones (1974), Schuster (1980), Wigginton (2004), Reiner-Drehwald (2005 a), Pócs (2010), Ye et al. (2013), Lee (2013), Renner et al. (2010, 2021), Gradstein (2021).</p></div>	https://treatment.plazi.org/id/E52A876511975B8EBF4FBFD400C5307C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
9870B2321D71585282E7D315CED58F0A.text	9870B2321D71585282E7D315CED58F0A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Macrolejeunea) (Spruce) Gradst. & G. E. Lee	<div><p>[Clade I] Lejeunea sect. Macrolejeunea (Spruce) Gradst. &amp; G. E. Lee stat. nov.</p><p>Lejeunea subg. Macrolejeunea Spruce (Spruce 1884: 224)</p><p>Type species</p><p>Lejeunea pallescens Mitt. (lectotype, designated by Evans 1906).</p><p>Description</p><p>Plants dioicous. Stem epidermis cells large, ca 3.5–6 times larger than medullary cells and strongly bulging outwards, medullary cells in 10–50 rows. Oil bodies granular. Gynoecial innovations absent. Perianths eplicate. Asexual reproduction by specialized devices absent.</p><p>Distribution</p><p>Neotropical.</p><p>Species</p><p>Lejeunea osculatiana De Not., L. pallescens Mitt.</p><p>Further species (not sequenced)</p><p>Lejeunea sessiliflora (Steph.) Grolle.</p><p>Notes</p><p>The typical characters of sect. Macrolejeunea are the absence of innovations and the usually eplicate perianth. Lejeunea sessiliflora, a rare Caribbean species known from Cuba and Haiti, is placed in sect. Macrolejeunea following Grolle (1988). The species fits this section in stem anatomy, dioicy, a highly connate female involucre, and absence of innovations and asexual reproduction.</p><p>References</p><p>Grolle (1988), Reiner-Drehwald and Schäfer-Verwimp (2008).</p></div>	https://treatment.plazi.org/id/9870B2321D71585282E7D315CED58F0A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
D4586B7D650354D7A8B63687469F4900.text	D4586B7D650354D7A8B63687469F4900.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Minutilobae) R. M. Schust.	<div><p>[Clade XV] Lejeunea sect. Minutilobae R. M. Schust. (Schuster 1980: 1031)</p><p>Byssolejeunea Herzog (Herzog 1941: 84) – Type species: Lejeunea abnormis Herzog (= L. exilis var. abnormis (Herzog) G. E. Lee).</p><p>Cardiolejeunea R. M. Schust. &amp; Kachroo (Schuster 1963: 149) – Type species: C. cardiantha R. M. Schust. &amp; Kachroo (= L. papilionacea Prantl).</p><p>Stenolejeunea R. M. Schust. (Schuster 1963: 144) – Type species: S. thallophora (Eifrig) R. M. Schust. (= L. thallophora (Eifrig) Gradst.).</p><p>Type species</p><p>Lejeunea minutiloba A. Evans.</p><p>Description</p><p>Plants delicate, mostly less than 1 mm wide. Stem epidermis cells only slightly larger than medullary cells, rarely bulging outwards, medullary cells few, in 5–12 (– 15) rows. Cuticle smooth or finely punctate-papillose. Oil bodies usually granular, rarely homogeneous ( L. dimorpha, L. minutiloba). Male bracteoles restricted to the base of the male spike. Innovations present, sterile or fertile but not repeatedly fertile. Perianth 5 - keeled (eplicate in L. exilis var. exilis), keels smooth to frequently crenate by mammillose cells or toothed, lateral keels sometimes expanded as auricles ( L. papilionacea). Asexual reproduction by strap-shaped gemmae in Asian-Australasian members of the section, rarely by cladia ( L. dimorpha).</p><p>Distribution</p><p>Pantropical.</p><p>Species</p><p>Lejeunea adpressa Nees, L. anisophylla Mont., L. apiculata Sande Lac., L. compressiuscula (Steph.) G. E. Lee &amp; Heinrichs, L. dimorpha T. Kodama, L. dipterocarpa E. W. Jones, L. discreta Lindenb., L. exilis (Reinw., Blume &amp; Nees) Grolle, L. heinrichsii G. E. Lee, Bechteler, Pócs &amp; Schäf. - Verw., L. ibadana A. J. Harr. &amp; E. W. Jones, L. malaysiana G. E. Lee &amp; Pócs, L. micholitzii Mizut., L. minutiloba A. Evans, L. papilionacea, L. patriciae Schäf. - Verw., L. subolivacea Mizut., L. tasmanica Gottsche (?), L. thallophora .</p><p>Further species (not sequenced)</p><p>Lejeunea morobensis (Grolle) M. A. M. Renner &amp; Pócs.</p><p>Notes</p><p>This large section stands out by small plant size, frequency of autoicy (e. g. in a large, robust subclade consisting of L. subolivacea, L. adpressa, L. dipterocarpa, L. papilionacea, L. anisophylla, L. ibadana, L. heinrichsii, L. minutiloba, and L. compressiuscula), thin stems with few medullary cell rows, presence of innovations but absence of repeatedly fertile ones, and the frequency of strap-shaped-gemmae, e. g. in L. exilis, L. malaysiana, and some members of the former genus Stenolejeunea, including L. apiculata, L. morobensis, and L. thallophora . Interestingly, Stenolejeunea schiffneri (Herzog) Pócs (= L. pulchriflora) was found to be a member of sect. Lamacerinae (subg. Lejeunea). The latter section shares numerous characters with sect. Microlobae but differs in 2 - winged perianth keels and predominantly neotropical distribution. The morphological similarity of sect. Lamacerinae and sect. Microlobae exemplifies the strong parallel evolution within Lejeunea .</p><p>Lejeunea tasmanica has been considered a synonym of L. drummondii (Renner 2013) . However, in this study L. drummondii was resolved in the sect. Lejeunea clade highly distant from L. tasmanica . The latter is therefore retained here as a separate species pending further work on the relationship of these two Australian taxa.</p><p>Several species complexes, potentially comprising multiple independent entities, are identified within the section, including the paleotropical L. papilionacea and the pantropical L. adpressa, which is morphologically similar to L. anisophylla (Gradstein 2021) but occupies a separate lineage in the phylogenetic tree. In view of the molecular results, L. anisophylla and L. adpressa are retained as separate species (despite the lack of discriminating morphological characters) pending further study.</p><p>References</p><p>Wigginton (2004), Reiner-Drehwald (2009), Lee (2013), Lee et al. (2019, 2022).</p></div>	https://treatment.plazi.org/id/D4586B7D650354D7A8B63687469F4900	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
F93A73127B0A5285B66EDA9A17857FF2.text	F93A73127B0A5285B66EDA9A17857FF2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Nanolejeunea) (R. M. Schust.) G. E. Lee & Gradst.	<div><p>[Clade IX] Lejeunea sect. Nanolejeunea (R. M. Schust.) G. E. Lee &amp; Gradst. stat. nov.</p><p>Lejeunea subg. Nanolejeunea R. M. Schust. (Schuster 1980: 1092)</p><p>Type species</p><p>Lejeunea laetevirens Nees &amp; Mont.</p><p>Description</p><p>Plants dull green. Stems with 7 rows of epidermal cells surrounding few, 3–8 (– 10) rows of slightly smaller medullary cells. Cuticle finely to rather coarsely papillose. Oil bodies finely to coarsely granular, ca 3–10 per cell. Male bracteoles present throughout the male spike. Asexual reproduction by caducous branches and fragmenting shoots.</p><p>Distribution</p><p>Neotropical.</p><p>Species</p><p>Lejeunea laetevirens, L. multidentata M. E. Reiner &amp; Mustelier, L. ramulosa Spruce.</p><p>Notes</p><p>The section is primarily characterized by rather dull green, dioicous plants with thin stems made up of rather few rows of medullary cells (less than 10), a papillose cuticle, bracteoles present throughout the male spike, and asexual reproduction via caducous branches or shoot fragmentation. Lejeunea multidentata approaches the sect. Crossotolejeunea by its coarsely papillose cuticle and 2 - winged, dentate-ciliate perianths, but the members of the latter section differ in monoicy, restriction of bracteoles to the base of the male spike, and absence of asexual reproduction by caducous branches or shoot fragmentation.</p><p>References</p><p>Reiner-Drehwald and Mustelier Martinez (2004), Reiner-Drehwald (2010 b).</p></div>	https://treatment.plazi.org/id/F93A73127B0A5285B66EDA9A17857FF2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
D983A238227D5EEFB8CB9C7C85D9B91C.text	D983A238227D5EEFB8CB9C7C85D9B91C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Papillolejeunea) Gradst. & G. E. Lee	<div><p>[Clade XIII] Lejeunea sect. Papillolejeunea Gradst. &amp; G. E. Lee stat. nov.</p><p>Papillolejeunea Pócs (Pócs 1997: 2)</p><p>Type species</p><p>Papillolejeunea balazsii Pócs (= L. balazsii (Pócs) R. M. Schust.).</p><p>Description</p><p>Plants dioicous or paroicous, greatly varying in size, stems with few to many medullary cell rows (3–35). Leaf surface smooth or with slime papillae. Lobules frequently large, to 1 / 2 × leaf length, and with two teeth, first tooth sometimes stylus-like prolonged, to three cells long, hyaline papilla entally displaced. Cuticle smooth or punctate-papillose. Oil bodies finely granular ( L. colensoana, L. tumida). Male bracteoles restricted to the base of the male spike. Gynoecia: innovations usually repeatedly fertile. Perianths eplicate or 5 - keeled, keel smooth or crenate. Asexual reproduction by specialized devices absent.</p><p>Distribution</p><p>Southeast Asia-Australasia; centre of species diversity in the mountains of New Guinea.</p><p>Species</p><p>Lejeunea balazsii, L. candida Pócs, L. colensoana (Steph.) M. A. M. Renner, L. gradsteinii G. E. Lee, Damanhuri &amp; Latiff, L. stephaniana Mizut., L. tumida Mitt.</p><p>Further species (not sequenced)</p><p>Lejeunea falcata (Pócs &amp; J. Eggers) Pócs, L. koponenii (Pócs &amp; J. Eggers) Pócs, L. touwii (Pócs) R. M. Schust.</p><p>Notes</p><p>The distinctive characters of sect. Papillolejeunea are the strongly inflated and often large lobules (to half the lobe length) with a stout, to 3 cells long tooth and an entally displaced hyaline papilla. In other sections of Lejeunea, the hyaline papilla is positioned on the leaf margin or, occasionally, at the tip of the tooth in species with a prolonged, stylus-like tooth (sect. Heterolejeunea: L. setacea, L. trinitensis). The usually repeatedly fertile innovations, with rows of up to four gynoecia, and the absence of asexual reproduction are further characteristics of this section. The occurrence of slime papillae on the dorsal leaf surface, seen in L. balazsii and L. koponenii, is an autapomorphy of the section.</p><p>The centre of diversity of sect. Papillolejeunea are the mountains of New Guinea, where five species occur. Three of them ( L. falcata, L. koponenii, L. touwii) have not been sequenced and are included in the section on morphological grounds because of their morphological similarity to the type species.</p><p>References</p><p>Pócs (1997), Schuster (1998), Pócs and Eggers (1999), Renner et al. (2010, 2021), Lee (2013).</p></div>	https://treatment.plazi.org/id/D983A238227D5EEFB8CB9C7C85D9B91C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
F53FD3F8333750E09DB02999B5E07CEC.text	F53FD3F8333750E09DB02999B5E07CEC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Sordidae) Gradst. & G. E. Lee	<div><p>[Clade XII] Lejeunea sect. Sordidae Gradst. &amp; G. E. Lee sect. nov.</p><p>Type species</p><p>Lejeunea sordida (Nees) Nees.</p><p>Description</p><p>Plants dioicous, brown when dry. Stem epidermis cells distinctly larger than medullary cells, bulging outwards, medullary cells in 10–23 rows. Cuticle densely papillose. Lobules small, ovate-orbicular, strongly inflated, angle between keel and ventral leaf margin narrow, ca 90–120 °. Underleaves divided or undivided, large, reniform, ca 4–7 × stem width. Male bracteoles restricted to the base of the male spike. Gynoecia with sterile or fertile innovations. Perianths shortly 5 - keeled in the upper half, keels crenate by mammillose cells. Asexual reproduction by specialized devices absent (regeneration from leaf margins observed in L. sordida).</p><p>Distribution</p><p>Tropical amphi-Pacific.</p><p>Species</p><p>Lejeunea dipterota (Eifrig) G. E. Lee, L. leratii (Steph.) Mizut., L. mimula Hürl., L. sordida .</p><p>Further species (not sequenced)</p><p>Lejeunea anomala Lindenb. &amp; Gottsche.</p><p>Notes</p><p>The typical characters of sect. Sordidae are the darkish brown plants (dried condition) with reniform underleaves, small, strongly inflated lobules and a densely papillose cuticle. Undivided underleaves, seen in L. leratii and L. mimula, are within subg. Crossotolejeunea unique to sect. Sordidae and are a further typical character of this section.</p><p>Lejeunea anomala, a rare and little-known Neotropical species that was long placed in Ceratolejeunea because of its brown colour, is placed in this section based its close morphological similarity to L. sordida (Gradstein 2021) .</p><p>References</p><p>Eifrig (1937), Lee (2013).</p></div>	https://treatment.plazi.org/id/F53FD3F8333750E09DB02999B5E07CEC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
2006B262741B5269841B204D2939146C.text	2006B262741B5269841B204D2939146C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lejeunea (sect. Xenantholejeunea) (R. M. Schust.) G. E. Lee & Gradst.	<div><p>[Clade XIV] Lejeunea sect. Xenantholejeunea (R. M. Schust.) G. E. Lee &amp; Gradst. comb. et stat. nov.</p><p>Taxilejeunea subg. Xenantholejeunea R. M. Schust. (Schuster 1980: 1166)</p><p>Type species</p><p>Lejeunea umbilicata (Nees) Nees.</p><p>Description</p><p>Plants relatively large, 1.0–2.0 mm wide. Stem epidermis cells large, ca 3–6 times larger than medullary cells, sometimes strongly bulging outwards, medullary cells in 10–50 rows. Leaf cells with distinct trigones and frequent intermediate thickenings, up to 4 per cell. Lobules frequently with a large disc cell. Male bracteoles restricted to the base of the male spike. Innovations usually repeatedly fertile. Perianths 0–5 - keeled, with or without a beak. Asexual reproduction by specialized devices absent (regeneration from leaf margins observed in L. umbilicata).</p><p>Distribution</p><p>Indo-Pacific.</p><p>Species</p><p>Lejeunea albescens (Steph.) Mizut., L. asperula (Steph.) Mizut., L. fleischeri (Steph.) Mizut., L. kinabalensis Mizut., L. lumbricoides (Nees) Nees, L. microloba Taylor, L. mizutanii Grolle, L. pectinella Mizut., L. umbilicata, L. utriculata (Steph.) Mizut., L. vitiensis G. E. Lee &amp; Pócs.</p><p>Notes</p><p>Lejeunea sect . Xenantholejeunea, a former infrageneric group of Taxilejeunea, is characterized by relatively robust, dioicous plants with stems with highly enlarged epidermis cells and numerous medullary cells (up to 50 in rows), distinct trigones and intermediate cell thickenings, usually repeatedly fertile innovations, and absence of asexual reproduction by specialized devices. The section contains a robust, morphologically distinct subclade (BS 100, PP 1.00) consisting of L. lumbricoides, L. mizutanii, L. pectinella, L. utriculata, L. fleischeri, and L. vitiensis . Characteristic of this subclade are the recurved leaf apex, both in moist and dry conditions, the relatively large lobules, and the presence of a large, rectangular disc cell on the apical margin beyond the first tooth. The group is not formally described as it would render sect. Xenantholejeunea paraphyletic. A further subclade consisting of L. albescens, L. asperula, L. microloba, and the type of the section, L. umbilicata, stands out by having a terete, eplicate perianth without a beak. This subclade is not well-supported, however, and is therefore not described.</p><p>References</p><p>Eifrig (1937), Lee (2013).</p></div>	https://treatment.plazi.org/id/2006B262741B5269841B204D2939146C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Lee, Gaik Ee;Gradstein, S. Robbert;He, Xiaolan;Bechteler, Julia;Schäfer-Verwimp, Alfons;Pócs, Tamás	Lee, Gaik Ee, Gradstein, S. Robbert, He, Xiaolan, Bechteler, Julia, Schäfer-Verwimp, Alfons, Pócs, Tamás (2026): An infrageneric classification of the genus Lejeunea (Marchantiophyta: Lejeuneaceae) using molecular phylogeny and morphology. Plant Ecology and Evolution 159 (1): 123-141, DOI: 10.5091/plecevo.170279
