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
Arenaria 無心菜屬
作者
YING, SHAO-SHUN
型態特徵
Annual or perennial herbs or rarely subshrubs, often caespitose or mat forming. Leaves flat, broad or narrow, exstipulate. Flowers solitary or few to many in terminal or occasionally also axillary cymes or cymose panicles or clusters; sepals 5, free, chartaceous to coriaceous, with a single midrib or with midrib more prominent than lateral veins, rarely somewhat equally 3-veined; petals 5, whitish or pink, alternate the sepals, entire or rarely subemarginate, equal or not, rarely absent; stamens 10, the outer 5 with obsolete, single or bipartite basal glands; styles 3-5. Capsules ovoid, enclosed by the persistent sepals, opening by 6 teeth or occasionally 6 valves; seeds many or few, globose or disc-like, without strophiole on the hilum, black, rarely reddish.
參考文獻
種列表
- Arenaria ciliata
- Arenaria congesta var. macradenia
- Arenaria fendleri
- Arenaria hookeri
- Arenaria juncea 老牛筋
- Arenaria laxiflora
- Arenaria merckioides
- Arenaria serpyllifolia 無心菜
- Arenaria serpyllifolia var. leptoclades
- Arenaria squarrosa
- Arenaria stricta
- Arenaria subpilosa 亞毛無心菜
- Arenaria taiwanense
- Arenaria takasagomontana 高山無心菜
