Key to Nepenthes species in the Eastern Mindanao Biodiversity Corridor: Mt. Candalaga, Mt. Kampalili and Mt. Maitum, Maragusan, Davao de Oro:—A key follows:

1. Pitcher spur on the dorsal surface at the junction with lid branched; pitchers pubescent; inflorescence 1-flowered...... N. kampalili

- Pitcher spur on the dorsal surface at the junction with lid unbranched; pitchers glabrous; inflorescence 2-flowered ......................2

2. Leaves narrow; pitchers subcylindrical, with distinct pitcher hip; climbing stems ....................................................... N. candalaga

- Leaves broad; inconspicuous pitcher hip; epiphytic rosette stem ......................................................................................................3

3. Peristome teeth triangular; 4–6 veins running parallel to the midvein; pitcher wings prominent ................................. N. nebularum

- Peristome teeth needle-shaped; 5 veins running parallel to the midvein; pitcher wings rudimentary .............................. N. truncata