Nepenthes deaniana

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Nepenthes deaniana

A lower pitcher of Nepenthes deaniana. Thumb Peak (Mount Pulgar), Palawan.

Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Magnoliopsida
Order:	Caryophyllales
Family:	Nepenthaceae
Genus:	Nepenthes
Species:	N. deaniana

Binomial name

Nepenthes deaniana
Macfarl. (1908)

Nepenthes deaniana (pronounced /nəˈpɛnθiːz diːniːɑːnə/, after Dean C. Worcester, Philippine plant collector) is a tropical pitcher plant endemic to the Philippines, where it grows at an altitude of approximately 1200 m above sea level. The species is known only from the summit region of Thumb Peak, a relatively small, ultramafic mountain in Puerto Princesa Province, Palawan.

N. deaniana has no known natural hybrids. No forms or varieties have been described.

[edit] Description

Unlike most Nepenthes species, N. deaniana does not climb. The stem is 20 to 30 cm tall, 4 to 5 cm wide, and glabrous throughout. Plants spread by means of shoots. Leaves are lanceolate or obovate in form, 6 to 12 cm long, and 3.5 to 4 cm wide. They possess 4 to 5 pairs of longitudinal veins, connected by irregularly reticulate transverse veins. Tendrils are 10 to 15 cm long.^[1]

Pitchers are obconic, 6 to 9 cm high, and 2.3 to 3.5 cm wide. The peristome is cylindrical and 5 to 8 mm wide, bearing long attenuate teeth on its inner margin. The operculum or lid of this species is broadly cordate.^[1]

The male inflorescence is 15 to 20 cm long and may be pubescent to glabrous. Pedicels are 1-flowered, compressed and expanded at the base. Individual flowers have 4 sepals and 8 anthers.^[1]

[edit] References

^ ^a ^b ^c Macfarlane, J.M. 1927. The Philippine species of Nepenthes. The Philippine Journal of Science 33(2): 127–140.

Clarke, C.M., R. Cantley, J. Nerz, H. Rischer & A. Witsuba (2000). Nepenthes deaniana. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 06 May 2006.
Cheek, M.R. & M.H.P. Jebb 1999. Nepenthes (Nepenthaceae) in Palawan, Philippines. Kew Bulletin 54(4): 887–895. doi:10.2307/4111166
Macfarlane, J.M. 1908. Nepenthaceae. In: A. Engler Das Pflanzenreich IV, III, Heft 36: 1–91.
Schlauer, J. 1995. Re: Nepenthes. Carnivorous Plant Mailing List, October 5, 1995.