头花黄杨 tou hua huang yang

Shrubs small, 30-60 cm tall, densely ramified; young branches tetragonous, 0.5-1 mm in diam., puberulent or glabrous; internode 3-5 mm. Petiole ca. 1 mm; leaf blade obovate-spatulate or spatulate, 8-12 × 3-4 mm, rarely spatulate-linear, 1.5-2 × 2.5-4 mm, or narrowly oblong or narrowly oblanceolate, 15-25 × 5-7 mm, thinly leathery, adaxially puberulent along midrib, base narrowly cuneate, apex obtuse, with mucronulate or retuse tip; midrib elevated on both surfaces, lateral veins dense and visible on surface. Inflorescences axillary and terminal, capitate; rachis 3-5 mm, densely pubescent; bracts 6-8 pairs, ovate-triangular, ca. 1.5 mm, acute, pubescent toward base abaxially. Male flowers sessile; tepals ovate, ca. 1.3 mm, glabrous; sterile pistil ca. 0.8 mm. Female flowers: tepals ovate-elliptic, ca. 1.5 mm; ovary longer than style. Capsule ovoid, to 6 mm, hirtellous initially, later subglabrous or glabrous; persistent style ca. 1.5 mm; stigma obovate, decurrent to middle part of style. Fl. Mar, fr. Jul.

● Rock crevices in valleys, rocky areas; 300-700 m. NE Guangdong, N Guangxi, S Guizhou.

Lower Taxa

• Buxus cephalantha var. cephalantha
• Buxus cephalantha var. shantouensis M. Cheng