平脉狗牙花 ping mai gou ya hua

Ervatamia mucronata (Merrill) Markgraf; E. pandacaqui (Lamarck) Pichon; E. puberula Tsiang & P. T. Li; Pagiantha pandacaqui (Lamarck) Markgraf; Tabernaemontana guangdongensis P. T. Li; T. mollis Hooker & Arnott; T. mucronata Merrill; T. subglobosa Merrill; T. thailandensis P. T. Li.

Shrubs or small trees 1-14 m tall. Branchlets pubescent to glabrous. Petiole 0.3-2 cm; leaf blade elliptic or narrowly so, 3-25 X 1-10 cm, sometimes pubescent abaxially, apex acuminate, caudate, or obtuse; lateral veins 4-16 pairs. Cymes 3-16 cm. Flower buds with a broadly ovate head, apex rounded or obtuse. Corolla white, tube 0.8-2.2 cm; lobes obliquely oblong, falcate, 0.6-1.9 cm. Stamens inserted at or above middle of corolla tube. Ovary glabrous. Follicles obliquely ellipsoid, 1.2-7 X 0.5-3 cm, apex beaked or rounded. Fl. May-Jul, fr. Jul-Nov.

Open forests, brushwoods; low to middle elevations. S Guangdong, Taiwan, S Yunnan [Indonesia, Malaysia, Philippines, Thailand; Australia, Pacific Islands].