特徵描述
作者
HUANG, SHING-FAN and HUANG, TSENG-CHIENG
型態特徵
Herbs, shrubs or trees, erect, climbing or epiphytic; branches terete or tetragonous. Leaves opposite, rarely verticillate, simple, usually with 3–9 palmate veins, estipulate. Flowers bisexual, actinomorphic, sometimes slightly zygomorphic as to androecium, mostly 4–5-merous, solitary or in simple or compound cymes. Calyx tubular, free or adnate to the ovary; lobes imbricate or valvate. Petals imbricate, free, rarely connate at the base. Stamens usually as many as or twice as many as the petals, equal or unequal; filaments distinct, often bent and inflexed; anthers typically 2-celled, introrse, basifixed, dehiscing by a single (rarely 2) pore rarely by 2 longitudinal slits, the connectives often thickened at the base and produced, sometimes vanously appendaged. Ovary mostly inferior, 4–5-celled, the placentas axile, rarely parietal or basal, the ovules numerous; style and stigma simple. Fruit a loculicidally dehiscent capsule or a berry. Seeds often minute; embryo straight or conforming to the shape of seed when large; endosperm absent.
屬
A large family of about 240 genera and 4,000 species, tropical and subtropical; 11 genera in Taiwan.
參考文獻
Melastoma 野牡丹屬
作者
HUANG, SHING-FAN and HUANG, TSENG-CHIENG
型態特徵
Shrubs; branches and branchlets strigose or villose. Leaves oblong or lanceolate, 3–7-nerved, petioled. Flowers terminal, solitary, clustered or panicled, showy, generally purple, 5- rarely 6–7-merous; calyx-tube with simple, rarely with peniculate hairs, the lobes deciduous; petals equal in number to the calyx--lobes; stamens twice as many as the petals, very unequal, alternate, the longer ones with purple anthers having the connectives long-produced at base and ter¬minating in two lobes, the shorter ones having yellow anthers, the connectives not produced but with two tubercles in front; ovary more or less united to the calyx-tube, 5-(rarely 6–7-) celled, the apex bearing bristles; style filiform, simple; ovules very numerous; placentas axile. Fruit coriaceous or somewhat fleshy, dehiscing irregularly; seeds minute, very many, curved through half a circle, minutely punctate.
