Details

Nepenthes ventricosa blanco

Description:
Climber to at least 2 m tall. Stems winged, 0.4–1 cm diameter. Leaves without distinct petiole; lamina oblanceolate or narrowly oblong, 15–25 x 2–3 cm, apex acute, inconspicuously peltate, base tapered, clasping the stem for 2/3 its circumference, winged to the node below; longitudinal nerves 3–6 on each side of the midrib. Upper pitchers hour glass-shaped, 9–16 x 3–8 cm, basal half obliquely ellipsoid, apical half infundibuliform, up to 2x broad as basal portion, waist constriction central, 1/2–1/3 the width of the base or apex, fringed wings absent, reduced to ridges; outer surface uniformly cream-white or light green; mouth circular to shortly elliptic, horizontal or slightly oblique, straight; peristome red, broad, sub-cylindrical, 10–25 mm wide, ribs coarse, 1–2 mm apart, each protruding 3–4 mm, inner edge with short teeth; lid membranous, narrowly elliptic, 4–6 x 1.8–2.25 cm, apex rounded, base rounded, lower surface lacking appendages, nectar glands absent from a band c. 6 mm wide along the midline, pit-like or slightly bordered, mostly orbicular 0.4–0.5 mm diameter, less usually transversely elliptic, 0.8 mm long; spur flattened, 9 mm long, entire.

References:
Cheek, M. & M. Jebb. 2001. Nepenthaceae. Flora Malesiana ser. I, vol. 15: 1–157.
Jebb, M. & M. Cheek. 1997. A skeletal revision of Nepenthes (Nepenthaceae). Blumea 42: 1–106.
Fernando, E.S., V.B. Amoroso, D.N. Tandang, C.I. Banag, A.B. Lapis, W.S. Gruèzo, F.P. Coritico, F.A. Pollisco Jr., A.M. Palijon, M.D. Ching, F.P. Lansigan, C. Garcia-Francisco, N.M. Lita, A.M. Tagtag, & J.L. De Leon. 2021. Threatened Plants of the Philippines. 147p. Biodiversity Management Bureau, Department of Environment and Natural Resources (DENR), Quezon City, Philippines. ISBN 978-621-96498-0-3.
Macfarlane, J.M. 1927. The Philippine species of Nepenthes. Philippine Journal of Science 33: 127–140.
McPherson, S. & V.B. Amoroso. 2011. Field Guide to the Pitcher Plants of the Philippines. 60p. Redfern Natural History Productions Ltd., Poole, Dorset, UK.
Pelser, P.B., J.F. Barcelona, & D.L. Nickrent (eds.). 2011 onwards. Co’s Digital Flora of the Philippines. http://www.philippineplants.org.

Subspecies :

Common name / Local name : pitcher plant

Family : Nepenthaceae

Genus : Nepenthes

Taxonomic Group :

CITES Appendix : N/A

Conservation Status : Endangered

Geographic Location : Endemic

Identifications: Nepenthes ventricosa

Leaves without a distinct petiole
Upper pitchers distinctly constricted at or near the middle part; peristome broad
Pitchers constricted at or near middle part
Peristome subcylindrical, 10-25 mm wide; pitchers creamish-white or light green, more strongly constricte; leaves with 3-4 pairs of lateral nerves
Nepenthes
Leaves with midrib extended into a long tendril with the distal part forming into a cup or pitcher-like structures
Angiosperms
Plants producing true flowers and fruits for sexual reproduction