A New Record of Gaertnera junghuhniana Miq. (Rubiaceae) fromSouthern Vietnam

摘要

The genus Gaertnera Lam. (Rubiaceae) comprises ca. 70 species of small trees and shrubs native to continental Africa, Madagascar, Sri Lanka, India, continental Southeast Asia, Sumatra, Borneo and Sulawesi (Malcomber & Taylor 2009). In Vietnam, only Gaertnera sralensis (Pierre ex Pit.) Kerr has been reported (Pitard 1922-1924, Malcomber & Taylor 2009). It is distributed from the south to the center of the country, and is also in Cambodia, Thailand and Peninsular Malaysia. Ho (2000) treated G. sralensis as a synonym of u. vaginans subsp. jtwghulmicma (Miq.) Beusekom, but Malcomber & Taylor (2009) considered the Vietnamese plants to be G. sralensis. The description in Ho (2000) and characteristics of all the specimens collected in Vietnam and deposited in the herbarium P (digitalized images examined) are identical to G. sralensis.