Ophiopogon 沿階草屬
型態特徵
Glabrous caulescent or acaulescent perennial herbs. Rhizome stout, often bearing stolons. Roots fibrous, often with small tubers; ligneous prop roots sometimes developed. Leaves basal or cauline, usually linear, sometimes differentiated into narrowly elliptic or oblong blade and petiole, base sheathing, chartaceous to coriaceous. Inflorescence racemose. Bracts ovate to subulate, margin usually scarious. Flowers 1-several per bract, campanulate, jointed to pedicel, secund, cernuous. Tepals 6, ovate to lanceolate. Stamens 6, opposite tepals; anthers usually lanceolate, base 2-lobed, introrse; filaments short, occasionally connate. Pistil 1; ovary inferior or semi-inferior, 3-locular; ovules basal, 2(-5) per locule, collateral, anatropous; style usually subulate; stigma sometimes minutely 3-toothed. Carpels rupturing in early stage of maturity, exposing developing seeds; seeds with sarcotesta, usually bluish. Basic chromosome number X=18.
About 50 species in Asia. Two species in Taiwan.
Ophiopogon japonicus (Thunb.) Ker Gawl. has been repeatedly reported from Taiwan, but no specimens, except those from cultivation (TAIPEI: Yangmingshan, N. Tanaka s. n. 1987) have been seen.
參考文獻
- YING, Shao-Shun, Flora of Taiwan, second edition 5: 54. 2000. (Fl. Taiwan 2nd edit.)
- Tanaka, N., Journal of Japanese Botany 76: 59-76. 2001. (J. Jpn. Bot.)
