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''Nepenthes pilosa'' is a tropical pitcher plant endemic to Borneo. It is characterised by a dense indumentum of long yellow-brown hairs. Pitchers have a distinctive hook-shaped appendage on the underside of the lid. The specific epithet derives from the Latin word ''pilosus'', meaning "hairy".〔Phillipps, A., A. Lamb & C.C. Lee 2008. ''Pitcher Plants of Borneo''. Second Edition. Natural History Publications (Borneo), Kota Kinabalu.〕 ''Nepenthes pilosa'' was for a long time conflated with ''N. chaniana'' and, with the exception of the type material, all specimens identified as ''N. pilosa'' prior to the description of ''N. chaniana'' in 2006 actually represent the latter species.〔〔 In ''Pitcher-Plants of Borneo'', Anthea Phillipps and Anthony Lamb list this species under the common name Golden-Furred Pitcher-Plant,〔Phillipps, A. & A. Lamb 1996. ''Pitcher-Plants of Borneo''. Natural History Publications (Borneo), Kota Kinabalu.〕 although this was published before the recognition of ''N. chaniana'' as a distinct species. ==Botanical history== ''Nepenthes pilosa'' was discovered in 1899 by Javanese plant collector Amdjah during the Nieuwenhuis Expedition,〔() 2006. (New pitcher plant species that went unnoticed. ) ''Daily Express'' 28 October 2006.〕 on which Amdjah also made the first collection of ''N. ephippiata''.〔 ''Nepenthes pilosa'' was formally described in 1928 by Dutch botanist B. H. Danser in his seminal monograph "The Nepenthaceae of the Netherlands Indies".〔 Danser designated ''Amdjah 491'' as the type specimen and also referred ''Amdjah 499'' to the species. Both specimens were colleced on January 28, 1899, from Bukit Batu Lesung, a mountain located near the center of Kalimantan, at an altitude of approximately 1600 m.〔〔 Danser also listed a "very doubtful" male specimen (''Mjöberg 46'') under his description of ''N. pilosa''. This specimen was collected by Eric Mjöberg between October and December 1925, from Bukit Batu Tiban at an altitude of 1700 m. Danser wrote of ''Mjöberg 46'':〔 "It is only one leaf with upper pitcher, and an inflorescence not certainly belonging to the same plant; the pitcher is not congruent with that of number ''Amdjah 491'' and this is the reason I have not completed the description with that of the male inflorescence." All three specimens mentioned by Danser are deposited at Herbarium Bogoriense (BO), the herbarium of the Bogor Botanical Gardens.〔〔Schlauer, J. N.d. (''Nepenthes pilosa'' ). Carnivorous Plant Database.〕 In the latter half of the 20th century, wild plants of ''N. chaniana'' were almost universally identified as ''N. pilosa''. One example of this is the treatment of ''N. chaniana'' by Bertram Evelyn Smythies in 1965,〔 in the proceedings of the UNESCO Humid Tropics Symposium, which was held in Kuching two years earlier.〔Smythies, B.E. 1965. The distribution and ecology of pitcher-plants (''Nepenthes'') in Sarawak. UNESCO Humid Tropics Symposium, June–July 1963, Kuching, Sarawak.〕 In his 1997 monograph, ''Nepenthes of Borneo'', botanist Charles Clarke noted that several authors had noticed discrepancies between the type material of ''N. pilosa'' and plants identified as this species in the field:〔Clarke, C.M. 1997. ''Nepenthes of Borneo''. Natural History Publications (Borneo), Kota Kinabalu.〕 "()he illustration of the type of ''N. pilosa'' in Danser (1928) does not correspond very well with plants identified as ''N. pilosa'' in East Malaysia (J. Schlauer, pers. comm.). M. Jebb (pers. comm.) also notes that the upper pitcher on the type is unusual ()" Despite this, Matthew Jebb and Martin Cheek did not distinguish the East Malaysian plants from ''N. pilosa'' in their monograph published the same year.〔Jebb, M.H.P. & M.R. Cheek 1997. A skeletal revision of ''Nepenthes'' (Nepenthaceae). ''Blumea'' 42(1): 1–106.〕 Similarly, in ''Pitcher-Plants of Borneo'' (1996), Anthea Phillipps and Anthony Lamb treated plants from Mount Alab, Crocker Range, as ''N. pilosa'', following the interpretation of J. R. Turnbull and A. T. Middleton in an unpublished mimeograph report〔Turnbull, J.R. & A.T. Middleton 1981. ''A preliminary review of the Sabah species of Nepenthes, including a regional list and some selected localities''. Unpublished mimeograph report to the Sabah Parks Trustees.〕 from 1981.〔 Although he treated plants from East Malaysia as ''N. pilosa'' in his 1997 monograph, Charles Clarke doubted their conspecificity.〔 He visited the type locality of ''N. pilosa'' in 2004, making the first collection of this species since 1899.〔 In July 2006, Clarke revisited wild populations of ''N. pilosa'' on Bukit Batu Lesung to confirm its status as a distinct species.〔 Later that year he, together with Ch'ien Lee and Stewart McPherson, published the formal description of ''N. chaniana''.〔Clarke, C.M., C.C. Lee & S. McPherson 2006. ''Nepenthes chaniana'' (Nepenthaceae), a new species from north-western Borneo. ''Sabah Parks Nature Journal'' 7: 53–66.〕 This revised circumscription means that ''N. pilosa'' is endemic to Kalimantan, while ''N. chaniana'' is native to Sabah and Sarawak.〔 As such, virtually all plants in cultivation up to that time under the name ''N. pilosa'' actually represented ''N. chaniana''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nepenthes pilosa」の詳細全文を読む スポンサード リンク
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