头状花耳草(原变种) tou zhuang hua er cao (yuan bian zhong)

Oldenlandia capitellata (Wallich ex G. Don) Kuntze; O. capitellata var. glabra Pitard; O. rubioides Miquel.

Plants glabrous. Fl. May, fr. not seen from China.

Broad-leaved forests in valleys; ca. 1500 m [as low as below 100 m in India]. Yunnan [India, Indonesia, Malaysia, Myanmar, Thailand].