Meibomia ramosissima (Arechav.) Schindl., Repert., 2014

Lima, Laura Cristina Pires, Queiroz, Luciano Paganucci De, Tozzi, Ana Maria Goulart De Azevedo & Lewis, Gwilym Peter, 2014, A Taxonomic Revision of Desmodium (Leguminosae, Papilionoideae) in Brazil, Phytotaxa 169 (1), pp. 1-119 : 25-27

publication ID

https://doi.org/ 10.11646/phytotaxa.169.1.1

DOI

https://doi.org/10.5281/zenodo.5154458

persistent identifier

https://treatment.plazi.org/id/537EF179-FF8C-455C-FF3B-2B2BFE6CFC49

treatment provided by

Felipe

scientific name

Meibomia ramosissima (Arechav.) Schindl., Repert.
status

sp. nov.

4. Desmodium arechavaletae Burkart, Darwiniana View in CoL 3(2): 216. 1939. Desmodium ramosissimum Arechav. , Flora Uruguaia 1, Anales Mus. Nac. Montevideo 3: 362. 1901, nom. illeg., non Don, 1832. Meibomia ramosissima (Arechav.) Schindl., Repert. View in CoL Spec. Nov. Regni Veg. 20: 149. 1924. Type:— URUGUAY. Tacuarembó: Tacuarembó, Gruta de los Cuervos, December 1898, J. Arechavaleta s.n (holotype MVM1124*!). Fig. 6 View FIGURE 6 .

Desmodium asperum f. longipetiolata Chodat & Hassl., Bull. Herb. Boissier View in CoL , sér. 2, 4(9): 889. 1904. Lectotype (designated here):— PARAGUAY. Amambay: Bella Vista, February, E. Hassler 8254 (lectotype G0070275 ![3 sheets], isolectotypes BM!, NY!). Remaining syntype: Paraguay. Amambay: Bella Vista , February , E. Hassler 8507 (G!).

Desmodium asperum f. lanata Chodat & Hassl., Bull. Herb. Boissier View in CoL , sér. 2, 4(9): 889. 1904. Lectotype (designated here):— PARAGUAY. San Pedro: flumen Capibary, Dec, E. Hassler 5911 (lectotype G00070273 !, isolectotypes BM!, G![3 sheets], K![2 sheets], NY!, P![4 sheets], W!).

Erect, slightly branched subshrub, 0.5–2.5 m tall, with a xylopodium; stems not virgate, slender, cylindrical, striate, sparsely puberulous-uncinate, not glaucous; internodes 1.1–1.7 cmlong. Stipules 6.4–15 × 0.5–2 mm, narrowly triangular, not auriculate, not amplexicaul, inserted perpendicularly at the base of the leaf petiole, free from each other, apex caudate, margin ciliate, glabrescent or glabrous, veins slightly conspicuous, caducous. Leaves unifoliolate; petiole 5–6 mm long, cylindrical, sulcate, sparsely puberulous-uncinate; stipels 9–11 mm long, subulate, margin straight, sparsely uncinate or sericeous on the outer surface, persistent; leaflets discolorous, coriaceous, venation brochidodromous, primary, secondary and tertiary veins prominent on the abaxial surface, indumentum densely velutinous on the primary and secondary veins, tomentose on the tertiary veins on the abaxial surface, adaxial surface puberulous, uncinate hairs covering both surfaces, terminal leaflet 9.5–12 × 4.5–6.5 cm, ovate, base obtuse, apex obtuse or subacute. Inflorescence a terminal paniculate; the main axis longer than the adjacent leaves, 25–30 cm long, densely puberulous-uncinate, 2 flowers per node; primary bract 2–3 mm long, ovate, margin straight, puberulous-uncinate on the outer surface, caducous, veins conspicuous on the outer surface; secondary bract ca. 1.5 mm long, narrowly triangular, margin straight, sericeous on the outer surface, caducous, veins inconspicuous on the outer surface; pedicel 2 mm long, sparsely puberulous-uncinate. Flowers 5–7 mm long; calyx bilabiate, tube campanulate, 1–1.5 mm long, puberulous-uncinate and hirsute on the outer surface; upper lip bifid, slightly fused, the 2 teeth joined for ca. ¾ of their length, acute, ca. 0.2 mm long; lower lip trifid, lateral tooth lanceolate, 1.5–2.2 mm long, central tooth triangular, 2.2–2.5 mm long; corolla purple, standard 5–6 × 4–5 mm, obovate, apex obtuse or retuse, maculate at the base, claw 1–1.5 mm long; wing petals 5–6 × 1.5–2 mm, oblong, apex obtuse, without callosities, claw 0.8–1 mm long; keel petals 6–6.5 × 1–2 mm, narrowly obovate, apex obtuse or subacute, with callosities, claw 2–3 mm long; androecium monadelphous, 5–7 mm long, vexillary stamen partially fused with the other from the base 2.5–3.5 mm long; ovary 3–4 mm long, sparsely tomentose na margin, stipe 0.8–1.3 mm long, glabrescent. Loment 1.5–2 cm long, stipe 2–3 mm long, sericeous, isthmus marginal, upper suture straight, lower suture sinuate; articles uniform 2–4, 4–5 × 2–3 mm, elliptic, not tortuous, indehiscent, membranaceous, veins insconspicuous, sparsely puberulous-uncinate. Seed ca. 3.5 × 2 mm, ovate, hilum subcentral.

DESMODIUM (LEGUMINOSAE, PAPILIONOIDEAE ) IN BRAZIL

Phytotaxa 169 (1) © 2014 Magnolia Press • 25 26 • Phytotaxa 169 (1) © 2014 Magnolia Press

LIMA ET AL.

Selected specimens examined:— BRAZIL. Mato Grosso do Sul: Ponta Porã: ca. 22 km Ponta Porã, Caminho para Bela Vista, 5 December 1970, fl., A . Krapovickas et al. 14072 ( CTES). Paraná: Ponta Grossa: PR-151, 3 km após saída de Ponta Grossa em direção a Castro, 12 December 1998, fl., S . T . S. Miotto 1659 ( ICN). Rio Grande do Sul: Manoel Viana: ca. 1,3 km do entroncamento de acesso secundário da RS-377 e a fazenda Berleze (ex Esquina do Silva ), 10 December 2008, fl., fr., L . C . P. Lima et al. 465 ( HUEFS). São Paulo: Itapetininga: ca. 4 km de Itapetinga, 21 January 1960, fl., fr., S . M . de Campos 161 ( G, RB, SP).

Distribution and Ecology:— Uruguay, Paraguay, Argentina, Bolivia and Brazil ( Chodat & Hassler 1904, Izaguirre & Beyhaut 1998, Vanni 2001, Lima et al. 2010). In Brazil the species has been collected in subtropical regions of the States of Mato Grosso do Sul, Paraná, Rio Grande do Sul, and São Paulo. It grows in stony fields.

Conservation Assessment:— LC (Least Concern), not endangered ( IUCN 2001).

Phenology:— flowering and fruiting from November to February.

Etymology:— chosen by Burkart in honor of José Arechavaleta, who greatly contributed to the Flora of Uruguay.

Common Name:— pega-pega.

Taxonomic notes:— ovate or long-elliptic, unifoliolate leaves, flowers to about 7 mm long, and membranaceous fruits help to distinguish Desmodium arechavaletae . The asperous, coriaceous, ovate or longelliptic unifoliolate leaves and paniculate inflorescences make D. arechavaletae morphologically similar to D. guaraniticum . However, the purple flowers to about 7 mm long (vs. lilac or rose coloured flowers more than 8 mm long in D. guaraniticum ) and elliptic, membranaceous articles (vs. orbicular, coriaceous articles in D. guaraniticum ) help to differentiate the two species.

Chodat & Hassler (1904) described Desmodium asperum f. longipetiolata Chodat & Hassl. and D. asperum f. lanata Chodat & Hassl. as forms of D. asperum (currently D. distortum ). However, these forms were synonymised by Schindler (1928) under Meibomia ramosissima , a name associated with Desmodium arechavaletae as confirmed in this study.

A

Harvard University - Arnold Arboretum

CTES

Instituto de Botánica del Nordeste

S

Department of Botany, Swedish Museum of Natural History

T

Tavera, Department of Geology and Geophysics

ICN

Instituto de Ciencias Naturales, Museo de Historia Natural

L

Nationaal Herbarium Nederland, Leiden University branch

C

University of Copenhagen

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

HUEFS

Universidade Estadual de Feira de Santana

M

Botanische Staatssammlung München

G

Conservatoire et Jardin botaniques de la Ville de Genève

RB

Jardim Botânico do Rio de Janeiro

SP

Instituto de Botânica

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Fabales

Family

Fabaceae

Genus

Meibomia

Loc

Meibomia ramosissima (Arechav.) Schindl., Repert.

Lima, Laura Cristina Pires, Queiroz, Luciano Paganucci De, Tozzi, Ana Maria Goulart De Azevedo & Lewis, Gwilym Peter 2014
2014
Loc

Meibomia ramosissima (Arechav.)

Schindl. 1924: 149
1924
Loc

Desmodium asperum f. longipetiolata Chodat & Hassl., Bull. Herb. Boissier

1904: 889
1904
Loc

Desmodium asperum f. lanata Chodat & Hassl., Bull. Herb. Boissier

1904: 889
1904
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