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|}} ''Nepenthes eustachya'' is a tropical pitcher plant endemic to Sumatra, where it grows from sea level to an elevation of 1600 m. The specific epithet ''eustachya'', formed from the Greek words ''eu'' (true) and ''stachys'' (spike), refers to the racemose structure of the inflorescence.〔Clarke, C.M. 2001. ''Nepenthes of Sumatra and Peninsular Malaysia''. Natural History Publications (Borneo), Kota Kinabalu.〕 ==Botanical history== ''Nepenthes eustachya'' was probably first collected in February 1856 by Johannes Elias Teijsmann on the Sumatran coast near the port town of Sibolga. This specimen, ''Teijsmann 529'', was designated as the lectotype of ''N. eustachya'' by Matthew Jebb and Martin Cheek in their 1997 monograph.〔Jebb, M.H.P. & M.R. Cheek 1997. A skeletal revision of ''Nepenthes'' (Nepenthaceae). ''Blumea'' 42(1): 1–106.〕 It is deposited at the herbarium of the Bogor Botanical Gardens along with two isotypes.〔 ''Nepenthes eustachya'' was described in 1858 by Friedrich Miquel.〔 In 1908, John Muirhead Macfarlane retained ''N. eustachya'' as a distinct species in his revision of the genus, titled "Nepenthaceae".〔Macfarlane, J.M. 1908. Nepenthaceae. In: A. Engler. ''Das Pflanzenreich IV'', III, Heft 36: 1–91.〕 B. H. Danser did not support this interpretation and instead treated ''N. eustachya'' in synonymy with ''N. alata'' in his seminal monograph, "The Nepenthaceae of the Netherlands Indies", published in 1928. He wrote:〔 ''N. eustachya'' Miq., only recorded from Sumatra and still distinguished by Macfarlane, is united with ''N. alata'' in the above. In his monograph, Macfarlane places ''N. alata'' in the group with carinate lid, ''N. eustachya'' among the species without keel on the lid ; yet he distinguishes a ''N. alata'' var. ''ecristata'', without keel. For the rest there is hardly any difference to be stated between these two species and especially the inflorescences are strikingly alike. Danser also identified ''Ridley 16097'' from the Malay Peninsula as ''N. alata'', extending the species's range even further and making its apparent absence from Borneo difficult to explain. ''Ridley 16097'' is now thought to represent a mixed collection of ''N. alba'' and ''N. benstonei''.〔Clarke, C. & C.C. Lee 2012. (A revision of ''Nepenthes'' (Nepenthaceae) from Gunung Tahan, Peninsular Malaysia. ) ''Gardens' Bulletin Singapore'' 64(1): 33–49.〕 Plants belonging to ''N. eustachya'' were identified as ''N. alata'' by a number of subsequent authors, including Shigeo Kurata in 1973,〔 Mitsuru Hotta and Rusjdi Tamin in 1986,〔 Mike Hopkins, Ricky Maulder and Bruce Salmon in 1990,〔 and T. Sota, M. Mogi and K. Kato in 1998.〔〔Sota, T., M. Mogi & K. Kato 1998. Local and regional-scale food web structure in ''Nepenthes alata'' pitchers. ''Biotropica'' 30(1): 82–91. 〕 In 1997, ''N. eustachya'' was once again elevated to species rank by Matthew Jebb and Martin Cheek, who noted a number of differences between the two taxa.〔 Charles Clarke supported this interpretation in his 2001 monograph, ''Nepenthes of Sumatra and Peninsular Malaysia''.〔 The specific epithet ''eustachya'' has been misspelled several times in the literature, including once by Otto Stapf in 1886 as ''N. eustachys''〔 and once by Jacob Gijsbert Boerlage in 1900 as ''N. eustachia''.〔〔Schlauer, J. (''Nepenthes eustachya'' ). Carnivorous Plant Database.〕 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 eustachya」の詳細全文を読む スポンサード リンク
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