identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
170BBC0E92DF58BFAB5C28E83D80401E.text	170BBC0E92DF58BFAB5C28E83D80401E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isotrema cangshanense X. X. Zhu, H. L. Zheng & J. S. Ma 2019	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Isotrema cangshanense X.X.Zhu, H.L.Zheng &amp; J.S.Ma sp. nov. Figures 1, 2, 3, 4  A–C</p>
            <p>Type.</p>
            <p>China. Yunnan: Yangbi County, The Cangshan Mountain, Sancha River, 25°41'49"N, 100°02'55"E, 2239 m a.s.l., 23 April 2019, X. X. Zhu et al. ZXX19353 (holotype: CSH [CSH-0164770!]; isotypes: CSH!, KUN!).</p>
            <p>Diagnosis.</p>
            <p> Isotrema cangshanense is morphologically similar to  Isotrema utriforme (S. M. Hwang) X. X. Zhu, S. Liao &amp; J. S. Ma,  I. forrestianum (J. S. Ma) X. X. Zhu, S. Liao &amp; J. S. Ma,  I. cucurbitoides (C. F. Liang) X. X. Zhu, S. Liao &amp; J. S. Ma and  I. obliquum (S. M. Hwang) X. X. Zhu, S. Liao &amp; J. S. Ma (Zhu et al. 2019a), but is distinguishable from these species by the following diagnostic characters: laminas oblong-lanceolate; calyx outside light yellow; limb narrow-ovoid, 2.4-3  × 0.9-1 cm, asymmetric, forming an acute angle with the upper part of the tube, 3-lobed, upper part separated to the middle, lower part shallowly lobed, inside black purple, net-shaped protruding stripes; throat ca. 5 mm in diam. Detailed morphological comparisons are shown in Table 1 and Figure 4. </p>
            <p>Description.</p>
            <p> Woody liana. Stems terete, young shoots pubescent. Petioles 0.7-3.5 cm long, pubescent to almost glabrous; laminas oblong-lanceolate, 6-20  × 1-7 cm, adaxially almost glabrous, abaxially villous, base auriculate, sinus 0.7-1.8 cm deep, apex acute, margin entire; basal veins 2-3 pairs, palmate, 2-3 pairs from base, lateral veins 12-18 pairs, pinnate. Flowers in axils of leafy shoots or, on older stems, solitary or in fascicles, each fascicle with 2-6 flowers; pedicels 1.5-4 cm, pubescent partly villous; bracteole 1, lanceolate, 2-5  × 1-2 mm, adaxially glabrous, abaxially densely villous, inserted below the middle of pedicel. Calyx tube geniculately curved, outside light yellow, abaxially sparsely pubescent partly villous; basal tube 1.8-2.5  × 0.5-0.6 cm, inside black purple, densely villous at base; upper tube 1.3-1.6  × 0.6-0.8 cm, inside black purple at base, light yellow towards apex, light red at upper part; limb saccate, narrow-ovoid, asymmetric, forming acute angle with upper part of the tube, 2.5-3  × 0.7-0.8 cm, 3-lobed, upper part separated to the middle, lower part shallowly lobed, upper two lobes triangular-lanceolate, 1.2-1.5  × 0.4-0.5 cm, lower lobe triangle, 0.4-0.7  × 0.4-0.5 cm, inside black purple, net-shaped protruding stripes; throat ca. 5 mm in diam. Anthers 6, oblong, ca. 1.5 mm long, adnate in 3 pairs to base of gynostemium, opposite to lobes. Gynostemium ca. 2.7  × 2.5 mm, 3-lobed. Ovary terete, ca. 10 mm long, densely villous. Capsule obovate-elliptic, ca. 4.5  × 2 cm. Seeds obovate-elliptic, ca. 5  × 4 mm, not winged, the adaxial surface deeply concave and the abaxial surface convex, both surfaces glabrous. </p>
            <p>Phenology.</p>
            <p>Flowering from April to May, fruiting is predicted from July to August (we have seen is just two residual fruit from last year).</p>
            <p>Etymology.</p>
            <p> The specific epithet derives from the type locality, The Cangshan Mountain, Yangbi County, western Yunnan, south-western China. The Chinese name is given as  “苍山关木通” . </p>
            <p>Distribution and habitat.</p>
            <p> The new species is currently known only from the Cangshan Mountain, Yangbi County, Yunnan, China. It grows in forests at an elevation between 2239 m and 2379 m, together with  Castanopsis sp. (  Fagaceae ),  Disporum sp. (  Colchicaceae ),  Notochaete hamosa Benth. (  Lamiaceae ),  Photinia Lindl. (  Rosaceae ),  Rubus sp. (  Rosaceae ) etc. </p>
            <p>IUCN Red List category.</p>
            <p> Since  Isotrema cangshanense is known from one population only, with fewer than ten individuals, the new species is assigned a preliminary status of Vulnerable (VU D2) according to IUCN Red List Criteria (IUCN 2012), indicating a population with a very restricted area of occupancy (typically less than 20 km2) or number of locations (typically five or fewer). Although the area is under protection as a national nature reserve, habitat disturbance brought about by human activities, such as grazing and felling, may have a negative impact on the new species. </p>
            <p>Specimens examined (Paratypes).</p>
            <p>China. Yunnan: Yangbi County, The Cangshan Mountain, 2300 m a.s.l., 23 April 2019, X. X. Zhu et al. ZXX19354 (CSH!); the same location, 2379 m a.s.l., 23 April 2019, X. X. Zhu et al. ZXX19355 (CSH!).</p>
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	https://treatment.plazi.org/id/170BBC0E92DF58BFAB5C28E83D80401E	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	Zhu, Xin Xin;Zheng, Hai Lei;Wang, Jun;Gao, Yong Qian;Ma, Jin Shuang	Zhu, Xin Xin, Zheng, Hai Lei, Wang, Jun, Gao, Yong Qian, Ma, Jin Shuang (2019): Taxonomic studies on the genus Isotrema (Aristolochiaceae) from China: I. I. cangshanense, a new species from Yunnan. PhytoKeys 134: 115-124, DOI: http://dx.doi.org/10.3897/phytokeys.134.37243, URL: http://dx.doi.org/10.3897/phytokeys.134.37243
