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''Nepenthes thorelii'' is a tropical pitcher plant endemic to Indochina. Very little is known about ''N. thorelii'' and it is unlikely to have entered cultivation, although various other taxa are often mislabelled as this species in the plant trade.〔Mey, F.S. 2010. In: S.R. McPherson ''Carnivorous Plants and their Habitats''. Volume 2. Redfern Natural History Productions, Poole. pp. 1340–1367.〕 Prior to its rediscovery in 2011, ''N. thorelii'' was considered possibly extinct, both in the wild and in cultivation.〔Ziemer, B. 2010. Exciting conservation news: The Rare ''Nepenthes'' Collection project! ''Carnivorous Plant Newsletter'' 39(3): 67.〕 ==Botanical history== The first known collection of ''N. thorelii'' was made by Clovis Thorel between 1862 and 1866〔(Specimen Details: ''Nepenthes thorelii'' Lecomte ). The New York Botanical Garden.〕 from Ti-tinh, Lo-thieu, Guia-Toan, Vietnam.〔Jebb, M.H.P. & M.R. Cheek 1997. A skeletal revision of ''Nepenthes'' (Nepenthaceae). ''Blumea'' 42(1): 1–106.〕 During this time, Thorel collected a number of specimens of ''N. thorelii'', all of which have been designated as ''Thorel 1032''. One of these specimens, the lectotype, is a male plant with lower pitchers. It is deposited at the Museum National d'Histoire Naturelle in Paris, together with one isotype: a female specimen with upper pitchers. A second isotype is held at Herbarium Bogoriense (BO), the herbarium of the Bogor Botanical Gardens.〔 An additional specimen of ''Thorel 1032'' is deposited at the New York Botanical Garden.〔 ''Nepenthes thorelii'' was formally described in 1909 by French botanist Paul Henri Lecomte, who named it after Thorel. The description was published in Lecomte's ''Notulae systematicae''.〔 Since then, one infraspecific taxon of ''N. thorelii'' has appeared in print; ''Nepenthes thorelii'' f. ''rubra'' was mentioned by Leo C. Song in a 1979 article published in the ''Carnivorous Plant Newsletter'',〔Song, L.C. 1979. ''Nepenthes'' crosses made at California State University, Fullerton. ''Carnivorous Plant Newsletter'' 8(1): 13.〕 but is considered a ''nomen nudum''.〔Schlauer, J. 2006. (''Nepenthes thorelii'' ). Carnivorous Plant Database.〕 In 1983, Bruce Lee Bednar wrote that cultivated plants labelled as ''N. kampotiana'' were thought to represent a natural hybrid between ''N. mirabilis'' and ''N. thorelii'', and that these appeared on some lists under the unofficial name ''N. × lecouflei''.〔Bednar, B. 1983. ''Carnivorous Plant Newsletter'' 12(3): 64.〕 Bednar noted that a plant known in the horticultural trade as "thorelii-long green" was considered by many to be a Thailand form of ''N. mirabilis'', while another plant called "short round", which had pubescent leaves and squat pitchers, might represent the true ''N. thorelii''. If this were the case, it would mean that artificial crosses such as ''N.'' 'Hachijo' and ''N.'' 'Effulgent Koto' are intergrades of ''N. mirabilis'' as opposed to hybrids.〔 In their 1997 monograph on the genus ''Nepenthes'', Matthew Jebb and Martin Cheek designated the male specimen deposited at the Paris herbarium as the lectotype of ''N. thorelii''.〔 The authors noted that there are "problems with the delimitation" of ''N. thorelii'' and the related taxa ''N. anamensis'' and ''N. smilesii''〔 (which are now considered conspecific).〔McPherson, S.R. 2009. ''Pitcher Plants of the Old World''. 2 volumes. Redfern Natural History Productions, Poole.〕〔 Catalano, M. 2010. ''Nepenthes della Thailandia: Diario di viaggio''. Prague.〕 Compounds derived from plants identified as ''N. thorelii'' have been the subject of some research. A 1998 article reported that naphthoquinones originating from ''N. thorelii'' showed antimalarial activity.〔Likhitwitayawuid, K., R. Kaewamatawong, N. Ruangrungsi & J. Krungkrai 1998. Antimalarial naphthoquinones from ''Nepenthes thorelii''. ''Planta Medica'' 64(3): 237–241.〕 This was followed by a paper in 2007 that studied the isozymic composition of nepenthesin in the pitcher fluid of a number of species, including one referred to ''N. thorelii''.〔Takahashi, K., M. Tanji & C. Shibata 2007. Variations in the content and isozymic composition of nepenthesin in the pitcher fluids among ''Nepenthes'' species. ''Carnivorous Plant Newsletter'' 36(3): 73–76.〕 A plant identified as ''N. thorelii'' was also used as part of a 2012 study into the sterility and antimicrobial properties of pitcher fluid.〔Buch, F., M. Rott, S. Rottloff, C. Paetz, I. Hilke, M. Raessler & A. Mithöfer 2012. Secreted pitfall-trap fluid of carnivorous ''Nepenthes'' plants is unsuitable for microbial growth. ''Annals of Botany'' 111(3): 375–383. 〕 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 thorelii」の詳細全文を読む スポンサード リンク
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