Quang Binh Prov., Le Thuy Distr., Kim Thuy municipality, Ho village, around point 16°57’48”N 106°35’34”E. Highly destroyed primary broadleaved evergreen forest on shale on very steep slopes and along mountain ridge at elev. about 800 m a.s.l.
Terrestrial sedge to 2 m tall on steep rocky slope. Occasional.