Pronephrium melanophlebium Isotype: Canlaon Volcano, Negros, Merrill 6959 Isotype: Canlaon Volcano, Negros, Merrill 6959 (BO) Isotype: Canlaon Volcano, Negros, Merrill 6959 (L) Isotype: Canlaon Volcano, Negros, Merrill 6959 (NSW) Isotype: Canlaon Volcano, Negros, Merrill 6959 (K) Isotype: Canlaon Volcano, Negros, Merrill 6959 (E)