|作者:||Zhang, J-W, Boufford, DE, Sun, H|
A new Himalaya-Hengduan Mountains endemic genus, Parasyncalathium J. W. Zhang, Boufford & H. Sun (Asteraceae, Cichorieae, Lactucinae) is described. Parasyncalathium is based on Syncalathium souliei (Franch.) Y. Ling, originally placed in Lactuca sect. Aggregatae Franch., as L. souliei Franch., then later moved to Syncalathium Lipschitz. Previous published evidence from cytology, molecular phylogeny, and morphology, and especially SEM of cypsela morphology in the present study confirm the difference between Syncalathium souliei and Syncalathium s. str., the latter including the type species of the genus, S.kawaguchii (Kitam.) Y. Ling. Syncalathium s.str. should be placed in subtribe Crepidinae (Asteraceae, Cichorieae); S. souliei, although distinct from other members of the subtribe, remains in Lactucinae where it groups within Lactuca s.l. in the tree topology.
Parasyncalathium J.W. Zhang, Boufford & H. Sun (Asteraceae, Cichorieae): A new genus endemic to the Himalaya-Hengduan Mountains