FLORA OF VIETNAM Orchidaceae Epigeneium labuanum (Lindl.) Summerhayes
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. Lithophytic at ridgetop. Tepals deep red-purple, lighter cream on edge of "wings", light cream fringes on labellum. Occasional.