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FOC | Family List | FOC Vol. 24 | Liliaceae

24. Streptopus Michaux, Fl. Bor.-Amer. 1: 200. 1803.

扭柄花属 niu bing hua shu

Chen Xinqi (陈心启 Chen Sing-chi); Minoru N. Tamura

Herbs perennial, with a creeping rhizome. Stem erect, simple or distally branched. Leaves alternate, sessile, ovate to lanceolate, thin, many veined, base sometimes amplexicaul. Flowers usually 1 or 2 on an axillary, slender peduncle partly adnate to stem, rarely 2--4 flowers in a terminal inflorescence. Flowers campanulate or subrotate. Tepals 6, free, outer ones usually slightly wider than inner. Stamens 6, inserted at or near base of tepals; filaments usually flat at base; anthers basifixed. Ovary 3-loculed; ovules (2 or 3 or)6--8 per locule. Style columnar or very short. Fruit a berry, globose, several to many seeded.

About ten species: temperate regions of the N hemisphere; five species (two endemic) in China.

1 Flowers (2 or)3 or 4 in a terminal inflorescence; tepals cuspidate-caudate at apex   1 Streptopus ovalis
+ Flowers 1 or 2, on an axillary, slender peduncle partly adnate to stem; tepals acuminate at apex.   (2)
2 (1) Leaves ciliate-denticulate at margin.   (3)
+ Leaves entire at margin.   (4)
3 (2) Style very short or indistinct; stigma subentire; peduncle curved but not geniculate   2 Streptopus koreanus
+ Style distinct, columnar, 3--4 mm; stigma deeply 3-lobed; peduncle geniculate near middle   3 Streptopus obtusatus
4 (2) Tepals 8--10 × 3--4 mm; anthers longer than filaments   4 Streptopus simplex
+ Tepals 6.5--8 × 1--2 mm; anthers shorter than filaments   5 Streptopus parviflorus

Lower Taxa


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