特徵描述
作者
YING, SHAO-SHUN
型態特徵
Annual or perennial herbs, often suffrutescent; stems often swollen at nodes. Leaves simple, opposite, entire, stipulate or exstipulate. Flowers actinomorphic, bisexual or rarely unisexual, solitary or in cymes; sepals 4-5, free or united into a tube, imbricate, often with membranaceous margins, persistent; petals as many as the sepals, very rarely absent, often entire, toothed or lobed, often clawed, sometimes with appendages (ligules, coronal scales) on the inner side; stamens (0-)3-10, often alter-nating with the petals and usually of the same number, the filaments slender, sometimes cohering at base, the anthers 2-locular, dehiscent longitudinally; ovary superior, sessile or short stipitate, 1-locular or imperfectly 2- to 5-locular at base, with free central placentation, styles 2-5, free or partially connate; ovules mostly numerous. Fruit a capsule, opening by teeth or valves, as many as or twice the styles, rarely rupturing irregularly, baccate, or indehiscent; seeds with endosperm and a more or less curved peripheral or excentric embryo.
屬
Nearly 80 genera with about 2,000 species, distributed throughout the world, but most abundant in the temperate regions of the northern hemisphere. Ten genera in Taiwan.
參考文獻
Cerastium 卷耳屬
作者
YING, SHAO-SHUN
型態特徵
Annual or perennial herbs, often glandular hairy. Leaves estipulate, opposite, flat. Flowers in terminal forked cymes, 4-5-merous, bracteate; sepals free; petals white, oblong-obovate, emarginate, or bifid to nearly 1/2 their length, rarely fimbriate or entire, sometimes absent; stamens 4-10; ovary 1-celled, with many ovules, styles 3-5. Capsules opening by twice as many teeth as styles, usually exserted from the calyx and more or less curved, the teeth small, not extending for more than 1/3 capsule length. Seeds many, reniform, orbicular or broadly obovoid, compressed, brown, verrucose.
參考文獻
- YING, SHAO-SHUN, Flora of Taiwan, second edition 2: 346. 1996. (Fl. Taiwan 2nd edit.)
- Sell, P. D. & F. H. Whitehead, Europe. Feddes Rep. 69: 14-24. 1964.
種列表
- Cerastium alpinum
- Cerastium arcticum
- Cerastium arvense 卷耳
- Cerastium brachypetalum 灰色卷耳
- Cerastium carinthiacum var. lanceolatum
- Cerastium formosanum 台灣卷耳
- Cerastium glabratum
- Cerastium glomeratum 球序卷耳
- Cerastium glutinosum
- Cerastium gnaphalodes
- Cerastium haussknechtii
- Cerastium holosteoides var. hallaisanense 卷耳
- Cerastium kaoi
- Cerastium lapponicum 六齒卷耳
- Cerastium morrisonense 玉山卷耳
- Cerastium nutans
- Cerastium pallens
- Cerastium parvipetalum 小瓣卷耳
- Cerastium rupestre
- Cerastium semidecandrum
- Cerastium sp.
- Cerastium triviale
- Cerastium vescotum
- Cerastium vulgatum
