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Campanulaceae

桔梗科

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特徵描述

作者

LAMMERS, Thomas G.

型態特徵

Perennial herbs, less often annual, biennial, shrubs, or trees, with milky latex. Leaves alternate (sometimes opposite or whorled), simple, exstipulate. Flowers perfect or rarely imperfect, pendulous or erect, sessile or pedicellate, solitary (terminal or axillary) or in various types of inflorescences; calyx adnate to ovary, forming a hypanthium, usually 5-lobed; corolla sympetalous, actinomorphic or zygomorphic, valvate, usually 5-lobed; stamens usually 5, alternate with corolla lobes; filaments distinct or connate, free or adnate to corolla; anthers distinct or coherent or connate around style; ovary inferior and adnate to hypanthium (rarely superior and free), 2–5(–10)-celled, with axile placentation (rarely 1-celled with parietal, apical, or basal placentation); style solitary, with a ring of hairs below apex; stigma lobes 2–5(–10); ovules numerous (rarely solitary or few). Fruit a capsule or berry.

Eighty genera and over 2,300 species, worldwide but with the greatest concentration of species in Africa and South America. Recently divided into five subfamilies, two of which are represented in the native flora of Taiwan: Campanuloideae by six genera and eight species (two endemic), Lobelioideae by one genus and five species. One additional genus of each is represented by a single naturalized species. In addition, several species are cultivated as ornamentals, in particular Lobelia erinus L. of South Africa and Platycodon grandiflorus (Jacq.) A. DC. of mainland Asia and Japan. The genusSphenoclea, formerly assigned to Campanulaceae, is discordant and has been removed to its own family, Sphenocleaceae.

參考文獻

Lobelia 山梗菜屬

作者

LAMMERS, Thomas G.

型態特徵

Annual and perennial herbs, shrubs, and trees. Leaves alternate. Flowers perfect or rarely imperfect, erect, pedicellate, solitary and axillary or in terminal racemes; calyx lobes 5, crowning hypanthium; corolla zygomorphic, unilabiate or bilabiate, 5-lobed, in a wide range of colors, tube slit dorsally nearly to base, often laterally fenestrate; stamens 5; filaments connate, free from corolla; anthers connate, forming an oblique tube, all 5 or only lower 2 with trichomes at apex; ovary 2-celled; stigma lobes 2, rounded. Fruit a loculicidal capsule or a berry crowned by the calyx lobes; seeds small, numerous.

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