Melastomataceae

野牡丹科

APG 4

Melastomataceae 野牡丹科

特徵描述

屬列表

標本列表

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

HUANG, SHING-FAN and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 905. . (Fl. Taiwan 2nd edit.)

Medinilla 野牡丹藤屬

作者

HUANG, SHING-FAN and HUANG, TSENG-CHIENG

型態特徵

Branching shrubs, erect or scandent; branches terete, angular or winged. Leaves opposite or whorled, entire, often fleshy, glabrous or nearly so, longitudinally 3–9-nerved. Flowers in terminal panicles or lateral simple or compound cymes, white or rose, with or without bracts, 4- or 5- rarely 6-merous; calyx-tube ovoid or cylindric, the limbs truncate or obscurely toothed; stamens twice as many as the petals, equal or nearly equal (rarely unequal); anthers opening at the top by a pore; connectives not (or very shortly) produced at the base but having two appendages in front and a spur behind; ovary inferior, 4–6 celled, usually glabrous at the apex; styles filiform; ovules very many, the placentas axile. .Berry crowned by the limb of the calyx; seeds very many, ovoid or subfalcate.