identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
673C7CB78FBA5C2494779E2FA1D4379D.text	673C7CB78FBA5C2494779E2FA1D4379D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Asplenium paucipinnatum K. W. Xu, Li Bing Zhang & Pollawatn 2026	<div><p>Asplenium paucipinnatum K. W. Xu, Li Bing Zhang &amp; Pollawatn sp. nov.</p><p>Fig. 1</p><p>Type.</p><p>Thailand • Nakhon Si Thammarat: Phrom Khiri District, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=99.77862&amp;materialsCitation.latitude=8.521389" title="Search Plazi for locations around (long 99.77862/lat 8.521389)">Khao Luang National Park</a>, elev. 300–600 m, 8°31'17"N, 99°46'43"E, 23 July 2019, Li Bing Zhang. Liang Zhang, R. Pollawatn &amp; X. M. Zhou 10976 (holotype: BCU-P 05253; isotypes: CDBI, KUN, MO, PYU) .</p><p>Description.</p><p>Asplenium paucipinnatum resembles A. micantifrons (Tuyama) Tuyama ex H. Ohba by its short creeping and radial rhizomes, 1 - pinnate laminae, pinnae deeply incised at basiscopic side of margin, and sori borne in 2 rows closely set along to the costa, but the former has lateral pinnae fewer than 14 pairs, pinnae oblique rhombic, pinna apex acute, and marginal teeth obtuse. In contrast, A. micantifrons has lateral pinnae more than 15 pairs, pinnae lanceolate, pinna apex acuminate, and marginal teeth acute.</p><p>Plants low-epiphytic or less often terrestrial, often on mossy tree trunks, occasionally in moist rock crevices, 20–40 cm tall. Rhizomes short creeping, with radial steles, up to 5 mm diameter, with fronds 2–6 mm apart, densely covered with scales. Rhizomes scales reddish brown, thickly membranaceous, narrowly triangular, margins slightly denticulate, (1.2 –) 3.5–4.5 (– 5.5) × (0.2 –) 0.55–0.65 (– 0.75) mm. Fronds widely spaced, not proliferous, 20–40 cm long, thinly coriaceous. Stipes semi-shiny, purplish to dark brown, up to 13 cm long, with few brown lanceolate small scales similar to those on the rhizome. Laminae oblong to elliptic in outline, 18–27 × 6–10 cm, 1 - pinnate, acuminate, basal pinnae somewhat reduced, apical segment deeply pinnatifid or gradually decrescent. Rachises dark brown at base of laminae, gradually changing to stramineous at top of laminae, subglabrous, terete abaxially, adaxial side grooved and with 2 green narrow wings. Pinnae 10–14 pairs, basal pinnae subopposite, others alternate, middle ones larger, obliquely spreading, (shiny) dark green adaxially, pale green abaxially, obliquely rhomboid, deeply incised at basiscopic side of margin, (2 –) 2.5–4 × 0.6–1 cm, mostly shortly petiolate, unequally cuneate at the base tending to be slightly auriculate acroscopically, apex acute, coarsely serrate or occasionally bearing a lobe at acroscopical pinnae with lobes up to 2 / 3 of the way to the costa. Veins free, visible on both surfaces, simple, once or twice forked, not reaching pinnae margins. Sori (2 –) 5–9 per pinna, linear, ca. 5 mm long, borne in two closely set rows along the costa. Indusia linear, membranous, entire, ± 1 mm wide, persistent.</p><p>Distribution and habitat.</p><p>Asplenium paucipinnatum is currently known only from one locality in Khao Luang National Park, Phrom Khiri District, Nakhon Si Thammarat, Thailand. It was observed to grow on moss-covered tree trunks or crevices of moist rocks within tropical rainforests at an elevation of 300–600 m.</p><p>Conservation and IUCN Red List category.</p><p>This species is currently known only from its type locality, where a single population comprising fewer than 50 individuals has been observed. According to the IUCN Red List guidelines, it is therefore provisionally assessed as Critically Endangered (CR) under criterion D. Further field surveys are required to determine whether this species occurs in other regions.</p><p>Etymology.</p><p>The specific epithet “ paucipinnatum ” alludes to the paucity of pinnae in comparison to those of its closely related species with short-creeping rhizome.</p></div>	https://treatment.plazi.org/id/673C7CB78FBA5C2494779E2FA1D4379D	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.		Pensoft via Plazi	Xu, Ke-Wang;Pollawatn, Rossarin;Zhang, Liang;Zhou, Xin-Mao;Zhang, Li-Bing	Xu, Ke-Wang, Pollawatn, Rossarin, Zhang, Liang, Zhou, Xin-Mao, Zhang, Li-Bing (2026): Asplenium paucipinnatum (Aspleniaceae), a new fern species from southern Thailand, based on morphological and molecular data. PhytoKeys 272: 159-167, DOI: 10.3897/phytokeys.272.173645
