identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
991343C9963556D885BC08752E956CC5.text	991343C9963556D885BC08752E956CC5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sedum hengshanense N. Wei, X. D. Qiu, J. L. Xia & Q. F. Wang 2026	<div><p>Sedum hengshanense N. Wei, X. D. Qiu, J. L. Xia &amp; Q. F. Wang sp. nov.</p><p>Figs 2, 3</p><p>Chinese name.</p><p>衡山景天.</p><p>Type.</p><p>China • Hunan: Nanyue District, Hengshan Mountain, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=112.69461&amp;materialsCitation.latitude=27.293781" title="Search Plazi for locations around (long 112.69461/lat 27.293781)">Zhurong Peak</a>, alt. 1245 m, 27.293782, 112.694611, on a rocky slope, 28 Apr 2025, J. L. Xia QS 112 (holotype: HIB!; isotype: PE!) .</p><p>Diagnosis.</p><p>Sedum hengshanense is morphologically most similar to S. morrisonense, but differs in having papillate leaf margins (vs. non-papillate leaf margins), smaller and thinner leaves (7–10 × 1.5–2.0 mm, ca. 0.6 mm thick vs. leaves 10–15 × 2.5–3 mm, ca. 1 mm thick), longer basal leaf spurs (1.0– 1.4 mm long vs. ca. 0.5 mm long) with an acuminate apex (vs. obtuse apex) and broadly spatulate to subtrapezoid nectar scales with an obtuse apex (vs. obovate nectar scales).</p><p>Description.</p><p>Perennial herbs, entirely glabrous. Stems all fertile, succulent; older stems prostrate, bearing persistent withered leaves; young stems arising from older stems, 6–12 cm tall. Leaves alternate, imbricate, oblong-lanceolate, not twisted when young, 7–10 mm long, 1.5–2.0 mm wide, ca. 0.6 mm thick; apex acute; basal leaf spur acuminate, 1.0– 1.4 mm long; margins papillate, especially conspicuous in the upper part; succulent. Inflorescence cymose, terminal, 3–5 - branched, 2–4 cm in diam.; bracts leaf-like, similar to the leaves. Flowers numerous, sessile, actinomorphic, 0.9–1.2 cm long. Sepals 5, unequal, oblong-lanceolate, 2.5–5.0 mm long, 1.0– 1.2 mm wide; apex shortly acuminate, conspicuous papillae; base spurred, spur ca. 0.8 mm long; green, fleshy. Petals 5, elliptic-lanceolate, 5–6 mm long, 1.2–1.5 mm wide; apex acuminate, shortly mucronate at the tip; basally connate for ca. 0.3 mm; yellow, fleshy. Stamens 10; antepetalous stamens 3.5–4.2 mm long, antesepalous stamens 3.9–4.4 mm long. Pollen tricolpate, ellipsoid, 26–28 μm long, 12–13 μm wide, exine with irregularly etched ornamentation. Carpels 5, erect, adaxially gibbous, lanceolate, basally connate for ca. 0.5 mm; ca. 4 mm long, ca. 0.9 mm wide; yellow. Nectar scales 5, broadly spatulate to subtrapezoid, apex obtuse, ca. 0.5 mm long, ca. 0.3 mm wide, white. Follicles obliquely divergent, gibbous, many-seeded. Seeds ellipsoid, surface densely papillate, 0.6–0.8 mm long, 0.2 mm wide.</p><p>Phenology.</p><p>Flowering from April to May. Fruiting from May to June.</p><p>Distribution and habitat.</p><p>Sedum hengshanense is distributed in Hengshan Mountain, central Hunan Province, China (Fig. 4), at elevations of 480–1250 m. It grows mainly on moist rocky cliffs, especially above 1000 m.</p><p>Additional specimens examined</p><p>(paratypes). • Hunan: Nanyue District, Hengshan Mountain, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=112.69461&amp;materialsCitation.latitude=27.293781" title="Search Plazi for locations around (long 112.69461/lat 27.293781)">Zhurong Peak</a>, 27.293782°N, 112.694610°E, alt. 1230 m, on rocky slopes, 27 Apr 2025, J. L. Xia QS 16 (HIB!) ; • the same locality, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=112.67214&amp;materialsCitation.latitude=27.315002" title="Search Plazi for locations around (long 112.67214/lat 27.315002)">Hongqidianzhan</a>, 27.315003°N, 112.672141°E, alt. 481 m, on rocky slopes, 6 May 2026, J. L. Xia QHN 01 (HIB!) ; • the same locality, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=112.69115&amp;materialsCitation.latitude=27.29469" title="Search Plazi for locations around (long 112.69115/lat 27.29469)">Huixianqiao</a>, 27.29469°N, 112.69115°E, alt. 1200 m, on rocky slopes, 9 Jun 2026, J. L. Xia QHN 02 (HIB!) ; • the same locality, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=112.69115&amp;materialsCitation.latitude=27.29469" title="Search Plazi for locations around (long 112.69115/lat 27.29469)">Nantianmen</a>, alt. 1100 m, on rocky slopes, 9 Jun 1964, C. M. Chen ex J. S. Yue 1595 (NAS!) .</p><p>Conservation status.</p><p>Three populations were documented in the wild, comprising fewer than 1,000 mature individuals. Two of these, located near the summit of Zhurong Peak, are vulnerable to anthropogenic disturbance associated with tourism development. Following the IUCN Red List Categories and Criteria (IUCN 2024), this new species is here assessed as Vulnerable (VU) under criteria C 2 a (i) and D 1.</p><p>Etymology.</p><p>The specific epithet ‘ hengshanense ’ refers to Hengshan Mountain (Hunan), the type locality where the species was discovered.</p></div>	https://treatment.plazi.org/id/991343C9963556D885BC08752E956CC5	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	Qiu, Xiang-Dong;Xia, Jiang-Lin;Zhang, Feng-Di;Wang, Guo-Ping;Tan, Guo-Ping;Xiong, Yu;Wang, Sheng-Wei;Wei, Neng;Wang, Qing-Feng	Qiu, Xiang-Dong, Xia, Jiang-Lin, Zhang, Feng-Di, Wang, Guo-Ping, Tan, Guo-Ping, Xiong, Yu, Wang, Sheng-Wei, Wei, Neng, Wang, Qing-Feng (2026): Sedum hengshanense (Crassulaceae), a new species from Hunan, central China. PhytoKeys 279: 201-214, DOI: 10.3897/phytokeys.279.192928
