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
Blastus 柏拉木屬
作者
HUANG, SHING-FAN and HUANG, TSENG-CHIENG
型態特徵
Shrubs; branches terete. Leaves opposite, oblonglanceolate, 3–5-nerved, petioled. Flowers minute, in axillary or terminal clusters or umbels; peduncles short, rarely long, bractless; calyx-tube campanulate, the limb 4-lobed; petals 4, lanceolate; stamens 4, equal; anthers attenuate at the top, opening by pores, the cells produced and divergent at the base, the connective not appendaged at the base; ovary inferior, 4-celled, puberulous at the apex; ovules very many; placentas axile, paired; style filiform simple; stigma capitellate, Capsules small, obscurely 4-furrowed, opening at the summit by 4 pores, finally loculicidally dehiscing into 4 valves; seeds very many, the testa linear, produced at both ends.
