File:Nepenthes sanguinea.gif

Summary
Nepenthes sanguinea herbarium specimens: a. upper portion of the stem of a female plant (Burkill et Holttum 8630), b. lower leaf and pitcher (Anderson 63), c. upper pitcher (Fox 182), d. fruiting raceme (Fox 184).

Source: Danser, B. H. 1928. The Nepenthaceae of the Netherlands Indies. Bulletin de Jardin de Botanique, Buitenzorg, Série III, 9 (3-4):249-438.