A new species of Camchaya (Asteraceae, Vernonieae) from Thailand.
Camchaya thailandica Bunwong, Chantar. & S.C.Keeley, sp. nov. from Phu Phrabat Historical Park, Udon Thani, Thailandis described as a new species. Plant of this new species are similar to Camchaya gracilis (Gagnep.) Bunwong & H.Rob. but differ in having ovate phyllaries without margin spines, 10-ribbed achenes, and broadly ovate leaves. This species is a rare endemic known only from the type collection and probably confined to open areas of sandstone hills in Udon Thani province.
Maejo University Phrae Campus, Mae Sai, Rong Kwang, Phrae 54140, Thailand.
Sukhonthip
S
Bunwong
Pranom
P
Chantaranothai
Sterling C
SC
Keeley