Euphorbia motuogensis M. T. Li, X. Z. Lan, H. P. Deng &amp; W. L. Zheng 2021, sp. nov.
Creators: name: Li, Man-Ting
name: Lan, Xiao-Zhong
name: Zuo, You-Wei
name: Deng, Hong-Ping
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Euphorbiaceae
Euphorbia
Euphorbia motuogensis

description: <i>Euphorbia motuogensis</i> M. T. Li, X. Z. Lan, H. P. Deng &amp; W. L. Zheng, <i>sp. nov.</i> (Figs. 1–2) <b>Type:— CHINA. Tibet:</b> Motuo, the fourth national survey on Chinese materia medica resources, coniferous forest, meadows; 29°41′46.4″N, 95°32′03.95″E, ca. 2600m a.s.l., 2 July 2016, <i>M. T</i> <i>.</i> <i>Li</i> &amp; <i>X. Z</i> <i>.</i> <i>Lan 542624150702036 LY</i> (holotype SWU). <b>Diagnosis:—</b> <i>Euphorbia motuogensis</i> is similar to <i>Euphorbia sikkimensis</i>, but it differs by its pileous stems, secondary involucral leaves absent, 3 yellow green cyathophylls, margin entire or concave in the middle and five similar glands. Herbs, 20–80 cm tall. Root terete, 20–40 cm × 3–5 mm. Stems single or clustered, 3–7 mm thick, mostly unbranched, pileous. Leaves alternate, all but lowermost uniform in size; stipules absent; petiole very short to almost absent; leaf blade ovate-oblong to elliptic, 3–6 × 1.5–2.5 cm, glabrous, base attenuate-cuneate, margin entire, apex obtuse; midrib prominent on both surfaces, lateral veins slender, lateral veins not reaching margin. Inflorescence a terminal pseudumbel; primary involucral leaves usually one round, 5 pecies, even two rounds, the second round involucral leaves usually 3, green, leaves long elliptic to ovate-elliptic, somewhat unequal, 3–4 × 1.5–2.5 cm, base attenuatecuneate, apex obtuse, primary rays 7 (8), 2–4 cm; secondary involucral leaves absent. Cyathophylls 3, yellow green, broad ovate, 1–1.4 × 1–1.2 cm, margin entire or concave in the middle, base and apex rounded. Cyathium; involucre campanulate, ca. 3.5–5× 5–5.5mm, 5 lobes, rounded; glands 5, rounded, densely pilose on the inside. Male flowers many, most exserted from involucre. Female flower: ovary pedicellate and extended out of cup, smooth, glabrous; styles free, style arms slightly 2-lobed. Capsule globose, ca. 5 × 5 mm, smooth, glabrous. Ovary 3-loculed with parietal placentation. Fl. and fr. Jun.–Oct. <b>Etymology:—</b> The specific epithet refers to Motuo, Tibet, China, the type locality of the new species. <b>Distribution and Habitat:—</b> <i>Euphorbia motuogensis</i> is currently known only from its type locality, i.e. the fourth national survey on Chinese materia medica resources. It grows at coniferous forest and meadows at an elevation of ca. 2600 m a.s.l. <b>Phenology:—</b> Flowering and fruiting were observed in June to October. <b>Additionally specimens examined (paratypes):—</b> CHINA. Tibet: Motuo, <i>M</i> <i>. T.</i> <i>Li</i>, <i>X. Z</i> <i>. Lan 542624150702037 LY</i> (SWU)
description: Published as part of <i>Li, Man-Ting, Lan, Xiao-Zhong, Zuo, You-Wei &amp; Deng, Hong-Ping, 2021, Euphorbia motuogensis (Euphorbiaceae), a new species from Xizang, China, pp. 107-116 in Phytotaxa 527 (2)</i> on page 108, DOI: 10.11646/phytotaxa.527.2.3, http://zenodo.org/record/5744423