Nepenthes alata var. biflora Macfarl. in Engler, Pflanzenr. IV. 111 (Heft 36): 72. 1908
Nepenthes alata var. biflora in Engler, Pflanzenr. IV. 111 (Heft 36): 72. 1908
Type (designated by Jebb, M. H. P. & Cheek, M. R. 19971): Philippines, Negros Island, Mt Silay, May 1906, H. N. Whitford 1537(lectotype: K, isolectotype: PH).