Pteridrys acutissima Pteridrys acutissima Ching in Bull. Fan Mem. Inst. Biol. 5: pl. 13, 19, f. 15. 1934Isotype: 'G. Kerbau 6000 ft', Haniff 14142 (K)Type: 'G. Kerbau 6000 ft', Haniff 14142 (SING)