A new species of Larix (Pinaceae) from Southeast Tibet and other nomenclatural notes on Chinese Larix

Larix kongboensis, a new species from southeastern Xizang (China) near its borders with Arunachal Pradesh (India), is described. Previously misidentif ied as L. mastersiana, its affinities with that Sichuan endemic and with L. griffithii (eastern Himalaya) and L. speciosa (Yunnan, Myanmar) are discus sed. Within L. potaninii Batalin, variety australis A. Henry ex Handel-Mazz etti has been found to be an earlier name for variety macrocarpa Y. W. Law. The nomenclature of the "Sikkim Larch" is discussed, and it is concluded t hat Larix griffithii J. D. Hooker, not L. griffithiana Carriere, is the cor rect name for this species.