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Corsiaceae Beccari

白玉簪科 bai yu zhan ke

Description from Flora of China

Herbs, perennial, achlorophyllous, holomycotrophic, rhizomatous or tuberous. Stem unbranched. Leaves alternate, amplexicaul, small. Flowers solitary, terminal, bisexual or unisexual, epigynous. Perianth of 6 tepals in 2 whorls, zygomorphic; posterior tepal large, broad, sometimes with basal callus; other tepals linear-filiform. Stamens 6; filaments short; anthers dorsifixed, dehiscence extrorse; pollen (not known from Corsiopsis) 1-aperturate. Gynoecium syncarpous, 3-carpellate; ovary unilocular with 3 parietal placentae; ovules numerous, anatropous, bitegmic, tenuinucellate; style absent or short; stigmas 3. Fruit (not known from Corsiopsis) capsular, with 3 valves. Seeds (not known from Corsiopsis) numerous, very small, winged; embryo rudimentary at time of release.

Three genera and 29 species: E Asia, Australia, Pacific islands (New Guinea, Solomon Islands), South America; one genus (endemic) with one species in China.

(Authors: Zhang Dianxiang (张奠湘)[55]; Richard M. K. Saunders[56])


 

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