铁皮石斛提取物10:1，多糖30%50% Dendrobium candidum extract

Dendrobium officinale Kimura et Migo
Shape
Stem erect, cylindrical, 9-35 cm long, 2-4 mm thick, unbranched, with many nodes; leaves biseriate, papery, oblong lanceolate, margin and midrib often purplish. Raceme often from the upper part of old stem with fallen leaves, with 2-3 flowers; bracts dry membranous, pale white, ovate, 5-7mm long, sepals and petals yellowish green, nearly similar, oblong lanceolate, lip white, base with a green or yellow corpus callosum, ovate lanceolate, slightly shorter than sepals, middle reflexed. Pistil column yellowish green, ca. 3 mm, apex with 1 purple spot on each side; anther cap white, long ovate triangular, ca. 2.3 mm, apex subacute and 2-lobed.
The flowering period is from March to June.
Distribution
It grows on the semi humid rocks in the mountains with an altitude of 1600 meters. Mainly distributed in Anhui, Zhejiang, Fujian and other places in China. 
Dendrobium officinale is suitable to grow in cool, humid and smooth air environment.