《中国植物志》|| 百合科 LILIACEAE ||对叶系 Ser. Oppositifolia Baker ||对叶黄精 Polygonatum oppositifolium (Wall.) Royle

18.对叶黄精 图版23: 1-2
Polygonatum oppositifolium (Wall.) Royle, Ill. Bot. Himal. 1: 380. 1839 ——Convallaria oppositifolia Wall. in Asiat: Res. 13: 380. 1820.
根状茎不规则圆柱形，多少有分枝，直径1-1.5厘米。茎高40-60厘米。叶对 生，老叶近革质，有光泽，横脉显而易见，卵状矩圆形至卵状披针形，长6-11厘米，宽 1.5-3.5厘米，先端渐尖，有长达5毫米的短柄。花序具3-5花，总花梗长5-8毫 米，俯垂，花梗长5-12毫米；苞片膜质，微小，位于花梗上，早落；花被白色或淡黄绿 色，全长11 13毫米，裂片长约2.5毫米；花丝长3.5-4毫米，丝状，具乳头状突起， 花药长约4毫米；子房长约5毫米，花柱长约6毫米。花期5月。
产西藏（南部）。生林下岩石上，海拔1800-2200米。尼泊尔、锡金、不丹、印度 北部也有分布。

《Flora of China》|| Liliaceae || Polygonatum ||对叶黄精 Polygonatum oppositifolium

22. Polygonatum oppositifolium (Wallich) Royle, Ill. Bot. Himal. Mts. 1: 380. 1839.

对叶黄精 dui ye huang jing

Convallaria oppositifolia Wallich, Asiat. Res. 13: 380. 1820.

Rhizome ± branched, tuberous terete, 1--1.5 cm thick. Stem arching, 40--60 cm, glabrous. Leaves many, opposite; petiole short, ca. 5 mm; leaf blade usually shiny, ovate-oblong to ovate-lanceolate, 6--11 × 1.5--3.5 cm, subleathery, with distinct cross veins, apex acuminate. Inflorescences 3--5-flowered; peduncle pendulous, 5--8 mm; bracts small, membranous, caducous. Pedicel 5--12 mm. Perianth white or pale yellowish green, sometimes spotted with lilac, cylindric, slightly constricted near mouth, 1.1--1.3 cm; lobes ca. 2.5 mm. Filaments filiform, 3.5--4 × ca. 0.25 mm, papillose, sometimes smooth proximally; anthers ca. 4 mm. Ovary ca. 5 mm. Style ca. 6 mm. Fl. May. 2 n = (24), 30*, (36).

Rocks in forests; 1800--2200 m. S Xizang [Bhutan, NE India, Nepal, Sikkim].