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Stemonaceae Engler

百部科

Description from Flora of China

Subshrubs, vines, or herbs perennial, with tuberous roots or creeping rhizomes. Stems erect or climbing. Leaves whorled, opposite, or alternate, petiolate or sessile; main veins 3 or more, transverse veinlets numerous. Inflorescences racemes or cymes, 1- to few flowered; peduncle axillary or attached to petiole or leaf midvein. Flowers bisexual, actinomorphic. Perianth segments 4, in 2 whorls, petaloid, free. Stamens 4, subhypogynous; filaments free or basally connate in a ring, very short; anthers dorsifixed or basifixed, erect, linear, introrse; connective usually appendaged, appendage extending beyond apex of anther locule, perianthlike, linear-lanceolate, long. Ovary superior or subinferior, 1-loculed; ovules 2 or more, basally or apically attached to placenta. Stigma sessile, small. Capsule slightly compressed, 2-valved. Seed appendages on or near funicle, arillate; testa leathery; embryo hard, albuminous.

Ji Zhanhe. 1997. Stemonaceae. In: Wu Kuo-fang, ed., Fl. Reipubl. Popularis Sin. 13(3): 254--260.

Four genera and ca. 32 species: Asia, tropical Australia, one species in E North America; two genera and eight species (five endemic) in China.

(Authors: Ji Zhanhe (吉占和 Tsi Zhan-huo); B. E. E. Duyfjes)

Lower Taxa


 

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