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|}} ''Nepenthes × pyriformis'' ( or ; from Latin: ''pyrus'' = pear, -''forma'' = shaped) is a natural hybrid involving ''N. inermis'' and ''N. talangensis''.〔McPherson, S.R. & A. Robinson 2012. ''Field Guide to the Pitcher Plants of Sumatra and Java''. Redfern Natural History Productions, Poole.〕 It is known only from Mount Talang in Sumatra, to which ''N. talangensis'' is endemic. ''Nepenthes talangensis'' was only described as a distinct species in 1994.〔Nerz, J. & A. Wistuba 1994. (Five new taxa of ''Nepenthes'' (Nepenthaceae) from North and West Sumatra ). ''Carnivorous Plant Newsletter'' 23(4): 101–114.〕 Prior to this it was placed within ''N. bongso'' and some of the older literature identifies this hybrid as ''N. bongso'' × ''N. inermis''.〔 ''Nepenthes inermis'' × ''N. talangensis'' has been the subject of taxonomic confusion in the past. In an article published in 1973 on the ''Nepenthes'' of Borneo, Singapore, and Sumatra,〔 botanist Shigeo Kurata incorrectly identified specimens of this hybrid as belonging to ''N. dubia''.〔Clarke, C.M. 2001. ''Nepenthes of Sumatra and Peninsular Malaysia''. Natural History Publications (Borneo), Kota Kinabalu.〕 In 1997, Matthew Jebb and Martin Cheek published their monograph "A skeletal revision of ''Nepenthes'' (Nepenthaceae)", in which they referred to ''N. dubia'' plant material from Mount Talang (''Kurata s.n.'' SING).〔 Charles Clarke later identified ''Kurata s.n.'' as representing ''N. inermis'' × ''N. talangensis''. The natural hybrid is similar to ''N. dubia'', but can be distinguished on the basis of several stable characters. The hybrid has a wider pitcher lid that is never relfexed beyond 90 degrees and the pitcher cup is not appressed in the lower parts as in ''N. dubia''. In addition, the mouth of ''N. inermis'' × ''N. talangensis'' is raised towards the back as opposed to being horizontal.〔 In 2001, Kurata described this hybrid as a new species, ''N. pyriformis''.〔 Clarke rejected this interpretation in his monograph ''Nepenthes of Sumatra and Peninsular Malaysia'', published the same year. Clarke found that the type specimen of ''N. pyriformis'', ''Kurata & Mikil 4230'' NDC, matches the appearance of ''N. inermis'' × ''N. talangensis'' "in most respects".〔 Following Clarke's interpretation, Kurata excluded ''N. pyriformis'' from his list of ''Nepenthes'' species the following year.〔Kurata, S. 2002. ''Proceedings of the 4th International Carnivorous Plant Conference'': 111–116.〕 ==References== 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 × pyriformis」の詳細全文を読む スポンサード リンク
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