User JeremiahsCPs on en-wiki · Public domain
About
This species is notable for its conspicuous indumentum of long yellow-brown hairs and its distinctive hook-shaped appendage on the underside of the lid. It is endemic to the mountain range of Bukit Batu Lesung in Borneo.
Field notes
Morphology
The climbing plant has petiolate, coriaceous leaves with obovate-lanceolate to lanceolate blades, measuring up to 30 cm by 7.5 cm. Lower pitchers are ovate to cylindrical, up to 10 cm high by 4 cm wide, featuring a flattened peristome with ribs and a lid that is roughly orbicular (2.5 cm). Upper pitchers are infundibular, reaching up to 18 cm high by 8 cm wide, with a prominent hook-like crest on the lid. The species is covered in a dense indumentum of yellow-brown hairs, especially on developing parts.
Distribution & habitat
Endemic to the mountain range of Bukit Batu Lesung (likely synonymous with Ketang Lesung) in East Kalimantan, Borneo, typically found in mossy forest at elevations of 1600 to 1700 m.
History & etymology
The species was discovered in 1899 by Javanese plant collector Amdjah and formally described in 1928 by Dutch botanist B. H. Danser. The specific epithet derives from the Latin word pilosus, meaning "hairy".
Conservation
Data Deficient on the 2014 IUCN Red List of Threatened Species.
Habitat
- Altitude
- 1,600–1,600 m
- Altitude Class
- highland
- Native To
- Borneo
- IUCN Status
- Data Deficient
Taxonomy
- Described
- 1928
- Authority
- Danser
Cultivation
- Difficulty
- intermediate
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