Amitostigma simplex
Amitostigma simplex is a species of the genus Amitostigma within the family of the Orchid Family ( Orchidaceae). It occurs only in China, where it is Huawu Huang zhū lán =磺化 物 猪 蓝called.
- 4.1 Notes and references
Description
Vegetative characteristics
Amitostigma simplex is a perennial herbaceous plant that reaches the heights of growth 5-14 centimeters and terrestrial growing. It constitutes almost oval spherical nodules having diameters 4-5 millimeters. The slender, smooth stem near its base has two tubular sheaths and above a single, undergraduate foliage leaf. The 1.0 to 2.5 cm long petiole sheathed the stems. Simple, herbaceous lamina is at a length of 1.5 to 4.0 centimeters and a width 3-6 mm oblong- elliptical with a sharp or blunt upper end.
Generative features
The standing on a non- leafing inflorescence stem inflorescence contains only an upright flowering. The lance-shaped with a length of 6 to 10 millimeters topsheet is almost as long as the ovary.
The pedicel and ovary is 8-9 millimeters long. The hermaphrodite flowers are zygomorphic and threefold. The yellow and light brown dotted, dorsal sepal is 3.8 to 6.0 mm long and 1.3 to 3.0 millimeters wide with a blunt upper end. The two lateral sepals half crescent shaped, 4.2 to 8.0 mm long and 1.5 to 5.0 millimeters wide. The petals are oblique - oval, with a length from 3.7 to 5.5 millimeters and a width of 1.8 to 4.0 millimeters. Trilobal the lip is approximately oval with a length of 1.0 to 1.5 centimeters in outline. The two lateral lobes are oblong - obovate, with a width of up to 9.0 millimeters; the middle lobe is at the upper end cut deep with a width of up to 1.0 inches and slightly curled at the edges. The spur is cylindrical with a length of 3-4 mm and a diameter of 1.0 to 1.3 millimeters.
Occurrence and risk
The natural range of Amitostigma simplex is located in China. The species grows on grassy slopes at altitudes 2300-4400 meters in the western Sichuan and northwestern Yunnan.
Amitostigma simplex applies according to the IUCN Red List as "endangered " = "at risk". Amitostigma simplex is listed in CITES Appendix II in order to avoid trade worldwide.
Taxonomy
The first description was in 1940 by Tang Tsin and Fa tsuan Wang in Bulletin of the Fan Memorial Institute of Biology, Volume 10, pp. 25