白玉簪科 bai yu zan ke
Zhang Dianxiang[1]; Richard M. K. Saunders[2]
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 two 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: South America, Australia, New Guinea, Solomon Islands; one genus and one species endemic to China.
1. CORSIOPSIS D. X. Zhang et al., Syst. Bot. 24: 313. 1999.
白玉簪属 bai yu zan shu
Flowers unisexual. Outer whorl posterior tepal erect, with a distinct labellum, without a basal callus; lateral tepals 2, pendulous; inner whorl tepals 3. Male flowers: stamens 6, in 2 whorls. Female flowers: stigmas sessile, connate.
One species: endemic to China.
1. Corsiopsis chinensis D. X. Zhang et al., Syst. Bot. 24: 313. 1999.
白玉簪 bai yu zan
Plant white. Rhizome ellipsoid-obovoid, 12--15 X ca. 5 mm. Stem solitary, 5--6 cm. Leaves ovate-triangular, 4--7 mm, membranous, many-veined, apex acute. Bracts subtending flowers ovate-triangular, 4--7 mm. Perianth white; posterior tepal elliptic, bladderlike, 1.2--1.4 X ca. 1 cm; inner whorl tepals linear, 4.5--6 cm. Staminal connective with an obtuse apical extension. Ovary elongated, ca. 5 mm. Fruit and seeds not seen. Fl. Jun.
* Dense forests, on humus-rich soil; 100--700 m. Guangdong (Fengkai).
The elevational range of the general region where Corsiopsis chinensis occurs is between 100 and 700 m, but the exact elevational range where the species occurs is unknown.