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FOC | Family List | FOC Vol. 11 | Euphorbiaceae | Antidesma

10a. Antidesma montanum var. montanum

山地五月茶(原变种) shan di wu yue cha (yuan bian zhong)

Antidesma apiculatum Hemsley; A. barbatum C. Presl; A. calvescens Pax & K. Hoffmann; A. chonmon Gagnepain; A. costulatum Pax & K. Hoffmann; A. gracile Hemsley; A. henryi Hemsley; A. henryi Pax & K. Hoffmann (1922), not Hemsley (1894); A. kotoense Kanehira; A. moritzii (Tulasne) Müller Argoviensis; A. paxii F. P. Metcalf; A. pentandrum (Blanco) Merrill; A. pentandrum var. barbatum (C. Presl) Merrill; A. pentandrum var. rotundisepalum (Hayata) Hurusawa; A. pubescens Roxburgh var. moritzii Tulasne; A. rotundisepalum Hayata.

Petiole (2-)5-10(-20) mm; leaf blade elliptic to oblong, more rarely slightly ovate or obovate, (6-)9-25 × (2-)3-10 cm, papery or membranous, glabrous except midvein and lateral veins pubescent on one or both surfaces, rarely abaxially slightly pubescent throughout, shiny and drying olive green on both surfaces but often lighter abaxially, base acute or obtuse, rarely rounded, apex acuminate, more rarely acute, mucronate; domatia sometimes present; major veins impressed, rarely flat adaxially, lateral veins 7-10 pairs, tertiary venation weakly percurrent. Male inflorescences 3-13 cm, unbranched to 10(-40)-branched, females 4-10 cm, unbranched to 6-branched, fruiting 6-20 cm. Fl. Apr-Sep, fr. Jul-Nov.

Forests; 100-1500 m. Guangdong, Guangxi, Guizhou, Hainan, Taiwan, Xizang, Yunnan [Bangladesh, Bhutan, Cambodia, India (including Andaman and Nicobar Islands), Indonesia, Japan (Ryukyu Islands), Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam; Australia (Prince of Wales Island, N Queensland)].

This is the most variable, common, and widespread taxon in the entire genus.

Antidesma costulatum is a new synonym here. The syntype Henry 13690 at Kew stands out only by its long petiole (up to 20 mm). There are several other specimens from Yunnan and Szechuan with similarly long petioles.


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