Cleisostoma
(pronounced: kly-soh-STOH-mah)
Classification
Vandeae subtribe Aeridinae
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Etymology
From the Greek kleis(t)os, meaning closed, and stoma, meaning mouth, referring to the throat of the spur which is partially occluded by often complex calli.
Distribution
A genus of about 80 species found from India to New Guinea as well as China and the Philippines.
Care and Culture Card
See basic growing conditions and care information below.
All species of Cleisostoma should be given bright light, intermediate to warm temperatures, and frequent watering provided the plants do not remain wet at the roots. Miniature trailing species such as C. scolopendrifolium require mounting on slabs with a small pad of moisture-retentive material at the roots. Broad-leaved species such as C. racemiferum require medium to coarse textured potting medium and grow best in pots or baskets. Terete-leaved species such as C. simondsii may be grown in either baskets or on slabs and generally prefer very high light levels given frequent watering.
Literature
Christenson, E. A. 1982. Sarcanthine genera 1: Cleisostoma Blume. Amer. Orchid Soc. Bull. 51:609-614. Deori, M. C. and C. L. Malhotra 1973(1976). Cleisostoma paniculatum (Ker.-Gawl.) Garay (Orchidaceae), a new record for India. Bull. Bot. Soc. India 15(3-4):274. Seidenfaden, G. 1975. Orchid genera in Thailand, II: Cleisostoma Bl. Dansk Bot. Arkiv 29(3):1-80. Tsi, Z.-H. 1983. A revision of the genus Cleisostoma in China. Bull. Bot. Res. North-East Forest. Inst. 3(4):71-86. Vasudeva Rao, M. K. 1985(1987). Cleisostoma uraiensis (Hayata) Garay & Sweet (Orchidaceae) in the Nicobar Islands, India. Bull. Bot. Surv. India 27(1-4):235.
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