Mahonia 十大功勞屬
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
Mahonia 十大功勞屬
作者
LU, SHENG-YOU and YANG, YUEN-PO
型態特徵
Evergreen unarmed shrubs, rarely small trees; wood yellow. Leaves alternate, odd-pinnately compound, rarely 3-foliolate, leaflets usually spinose-dentate. Flowers yellow, in many-flowered racemes or panicles arising from axils of scales of winter-buds; sepals 6 or 9; petals 6, similar to the sepals; stamens 6, filaments dilated, usually with 2 tooth-like appendages at apex; ovules few, stigma peltate. Fruit a berry, dark blue or purple, glaucous, rarely red or whitish.
About 50 species in Central and North America and eastern and southern Asia; two species in Taiwan.
