Taxonomic Studies in the Compositae of Thailand 12. Vernonia Shreb. sect. Tephrodes DC. and sect. Cyanopis B1.

摘要

Sects. Tephrodes and Cyanopis of Vernonia are taxonomically examined. For Vernonia benguetensis and V. cinerea var. montana of Sect. Tephrodes, this is the first record from Thailand. Vernonia patula of Sect. Cyanopis has been found to be unvariable in our area, though three varieties of this species were enumerated in the Malay Archipelago.