Cycas pranburiensis (Cycadaceae), a new cycad from Thailand

Yang, S.-L., W. Tang (Fairchild Tropical Garden, 11935 Old Cutler Road, Mia mi, FL,33156, U.S.A.), K. D. Hill (Royal Botanic Gardens, Mrs Macquaries Ro ad, Sydney 2000, Australia) & P. Vatcharakorn (Nong Nooch Tropical Garden, 163 Sukhumvit Highway, Sattahip, Cholburi 20250, Thailand.). Cycas pranburi ensis (Cycadaceae), a new cycad from Thailand. Brittonia 51: 44-47. 1999. - A new species of cycad allied to the C. circinalis group, Cycas pranburiens is, is described from the southeast karst area of Thailand near Pranburi, P rachuap Khiri Khan province. It is distinguished by its short leaves with b road, coriaceous leaflets and mostly unarmed petioles, and the extended, ge ntly curved sterile apices of the microsporophylls. The cone beetle fauna o f the new species, believed to be involved in pollination, is distinct from that of other southeast Asian species of Cycas.