Dendrobium chrysanthum Wall. ex Lindl.

Dendrobium chrysanthum Wall. ex Lindl., Edwards's Bot. Reg. 15: t. 1299 1830.

Dendrobium chrysanthum Wall. ex Lindl.; Photo Loi Nguyen Ngoc 

Synonym:

Callista chrysantha (Wall. ex Lindl.) Kuntze

Dendrobium chrysanthum var. anophthalama Rchb.f.

Dendrobium chrysanthum var. microphthalama Rchb.f.

Dendrobium paxtonii Lindl.

Common Name:

The Golden Yellow Flowered Dendrobium

Thailand Name: 

Ueang thian - Ueang kham sai - Ueang pu loei - Bai morakot - Uang Sai Morakat 

China Name:

束花石斛 shu hua shi hu

VietNam Name:

Ngọc vạn vàng.

Description: 

The cylindrical stem with 70 - 160 cm long, 0.6 - 0.8 cm thick. The leaves of the plant are pointed, with 10-16 cm long, 3 - 4 cm wide. The flower buds grow on the stem that still remain leaves. The flowers are yellow, 4 - 4.5 cm in diameter, peduncle and ovule are 4 - 5 cm long. Petals are egg shaped, about 2.3 - 2.4 cm long, 1.4 - 1.5 cm wide. The lips are yellow, with a funnel shape, 2.6 - 2.8 cm long, 2.3 - 2.4 cm wide, with 1 or 2 reddish spots in the middle.

Ecological:

Epiphytic on tree trunks in dense forests, lithophytic on wet rocks in valleys; 700-2500 m. 

Distribution:

China (W Guangxi, S Guizhou, SE Xizang, S Yunna), Bhutan, N India, Laos, Myanmar, Nepal, N Thailand, Vietnam (Lào Cai, Vĩnh Phúc (Tam Đảo), Hòa Bình.).

Chemical:

Chrysotobibenzyl, crepidatin, moscatilin, dengibsin, dendroflorin, emodin, physcion, chrysophanol and β-sitosterol.

Uses: 

Sweating, dehydration, lymphadenopathy, lack of acidity in the stomach, sperm, lumbar pain, sexual energy (whole tree).

Ref:

Yang, L. & Wang, Y. & Bi, Z.-M & Lin, P. & Wang, Z.-T & Xu, L.-S. (2004). Studies on chemical constituents of Dendrobium chrysanthum. Chinese Journal of Natural Medicines. 2. 280-282.