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Menispermaceae

防己科

特徵描述
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特徵描述

作者

HUANG, SHING-FAN and HUANG, TSENG-CHIENG

型態特徵

Climbing or twining, rarely erect, woody or suffruticose, dioecious plants. Leaves alternate, usually palmately veined and often lobed; stipules absent. Flowers small, usually in axillary racemes, sometimes panicles, solitary cymes or discoid heads, regular or rarely slightly irregular, 3-bracteolate; sepals usually 6, in 2 whorls, imbricate, outer whorl often smaller; petals 6, usually smaller than sepals, sometimes wanting, free or connate. Male flowers: stamens 3-12, free or connate, 2-celled; rudimentary carpels small or absent. Female flowers: staminodes 6 or absent; carpels usually 3, rarely 1 or 6 or more, free, sessile or stipitate; style terminal, simple or divided; ovule solitary, usually amphitropous. Ripe carpels drupaceous, usually strongly curved, stipitate or sessile, endocarp usually sculptured, bony or chartaceous. Seeds usually hook-shaped or reniform, often curved; endosperm smooth or ruminate or absent; embryo usually curved, cotyledons flat or semiterete.

About 63 genera and over 200 species, chiefly in the tropics; six genera in Taiwan.

參考文獻

Pericampylus 細圓藤屬

作者

HUANG, SHING-FAN and HUANG, TSENG-CHIENG

型態特徵

Climbing shrubs. Leaves subpeltate, petiole slender, articulate. Flowers in axillary panicles, with 3 bracts; sepals 6, outer sepals smaller, inner sepals large, obovate, spatulate; petals 6, cuneate at base. Male flowers: stamens 6, filaments cylindric, anther cells adnate, splitting transversely. Female flowers: staminodes 6, clavate; ovaries 3; styles short, 2-partite, segments subulate. Drupes 3, subglobose; endocarp horseshoe-shaped, dorsally crested and echinate, excavated. Seeds curved; cotyledons elongate, flat, scarcely broader than radicle.

參考文獻

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