Berberidaceae

小蘗科

APG 4

Berberidaceae 小蘗科

特徵描述

屬列表

標本列表

特徵描述

作者

LU, SHENG-YOU and YANG, YUEN-PO

型態特徵

Erect perennial herbs with creeping rhizomes or tubers, shrubs, or rarely small trees. Leaves alternate, often fascicled, cauline or basal, simple, ternately or pinnately compound, mostly estipulate and with petioles basally dilated. Flowers bisexual, solitary or in axillary cymes, racemes or panicles, usually yellow or white; sepals and petals similar, 4-6, free, imbricate or the former rarely valvate, petals sometimes reduced to nectaries, hypogynous, caducous; stamens as many as the petals and opposite to them, free or connate, hypogynous, filaments short, anthers usually dehiscing by 2 valves hinged at top; ovary superior, 1-celled, style short or absent, stigma dilated or conic or oblong; ovules few to many, rarely 1, on the ventral suture or at base of ovary, anatropous, rarely orthotropous. Fruit a berry or pod; seeds with a crustaceous fleshy or bony testa; endosperm copious, dense; embryo usually small, straight or curved.

屬

Eighteen genera with more than 200 species, chiefly in the temperate and mountain regions of the northern hemisphere. Three genera with ten species in Taiwan.

參考文獻

LU, SHENG-YOU and YANG, YUEN-PO, Flora of Taiwan, second edition 2: 575. 1996. (Fl. Taiwan 2nd edit.)

Berberis 小蘗屬

作者

LU, SHENG-YOU and YANG, YUEN-PO

型態特徵

Evergreen or deciduous shrubs with yellow wood. Leaves of the short shoots alternate, simple, mostly in fascicles on short axillary spurs, penninerved, entire or spinose-denticulate at margins, those of the long shoots usually transformed into 3-5-partite spines. Flowers yellow, bisexual, in fascicles or racemes, rarely solitary; bracteoles 2-4, apppressed; sepals 6, imbricate, in 2 series, the inner larger; petals 6, imbricate, in 2 series, often smaller than the sepals and usually with 2 basal glands inside; stamens 6, free, filaments obvious, anthers opening by 2 flap-like valves; ovary simple, stigma peltate, sessile or on short style; ovules 1 to many, basal, erect. Berry red or black.