FLORA OF VIETNAM Orchidaceae Acampe rigida (Buch.-Ham. ex J.E.Smith) P.F.Hunt
N. Viet Nam. Ha Giang Province, Quang Ba District, at Sin Suoi Ho village and river. Degraded agricultural land among limestone rocks to ridgetop of exposed limestone under light canopy with many epiphytes and lithophytes on north and east facing slopes, at 23°06′57″N, 105°01′48″E, at 514-900 m. Shrublet to 1 m near agricultural fields. Fruits dull, light green. Occasional.