Morphological, karyological and molecular delimitation of two gentians: Gentiana crassicaulis versus G. tibetica
ZHANG Xiao-Lan, GE Xue-Jun, LIU Jian-Quan, YUAN Yong-Ming
J Syst Evol . 2006, (6): 627 -640 .  DOI: 10.1360/aps06059