Cytological Studies in the East Himalayan Orchidaceae. III: Cypripedieae

Cytological observations on some west Himalayan orchids tribe: Epidendreae II (subtribes: Liparidinae, Oberoniinae, Dendrobiinae).

“…11) which confirms the only earlier report of n=15 by Vij et al (1976a Vij and Mehra (1976) and Vij et al (1976a) under Cirrhopetalum maculosum is confirmed. The somatic chromosome numbers 2n=38 and 2n=40 (see Tanaka andKa memoto 1972, 1974) are the most common for the genus Bulbophyllum, suggesting x=19,20.…”

“…The present count n=15 is in conformity with the earlier reports of Mehra and Bawa (1970) and Vij and Mehra (1976). The presence of B-chromosomes is record ed for the first time.…”

“…Vij and Mehra (1976) too reported n=19, 20 for the species they investigated. The only known discordant number is 2n=48 (Eftimiu-Heim 1941).…”

“…The only previous report for this species is n=15 Vij 1970, Vij andMehra 1976) from the Eastern Himalayas. The present taxon thus is tetraploid, while that from the Eastern Himalayas is diploid.…”

“…and Vij et al (1976a Mehra and Sehgal (1975) and Vij and Mehra (1976 Twenty one rather small bivalents were counted at diakinesis many of which showed precocious disjunction (Fig. 7).…”