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|}} ''Nepenthes tobaica'' is a tropical pitcher plant endemic to Sumatra. It is particularly abundant around Lake Toba, after which it is named. ''Nepenthes tobaica'' is closely related to ''N. angasanensis'', ''N. gracilis'', ''N. mikei'', and ''N. reinwardtiana''.〔Clarke, C.M. 2001. ''Nepenthes of Sumatra and Peninsular Malaysia''. Natural History Publications (Borneo), Kota Kinabalu.〕 ==Botanical history== The earliest known collection of ''N. tobaica'' was made by Johannes Elias Teijsmann on February 8, 1856, probably from the Batak regions. This specimen, which includes female floral material, is H. L. B. 908,155-1106.〔 Matthew Jebb and Martin Cheek designated this specimen as the lectotype of ''N. tobaica'' in their 1997 monograph.〔Jebb, M.H.P. & M.R. Cheek 1997. A skeletal revision of ''Nepenthes'' (Nepenthaceae). ''Blumea'' 42(1): 1–106.〕 ''Nepenthes tobaica'' was formally described in 1928 by Dutch botanist B. H. Danser in his seminal monograph "The Nepenthaceae of the Netherlands Indies".〔 At the time, the species was already known from numerous herbarium specimens. Danser suggested a possibly conspecific species in ''N. reinwardtiana'':〔 "''N. tobaica'' has only been found on the plateau north, east and south of Lake Toba. It is most closely related to ''N. Reinwardtiana'' and I am not quite certain, whether it is perhaps a form of this species, but up till now no intermediate forms have been discovered." In the scientific literature, ''N. tobaica'' has been confused with the closely related ''N. angasanensis'' on several occasions. ''Nepenthes tobaica'' as described in Danser's 1940 description of ''N. densiflora''〔 is actually ''N. angasanensis''.〔 Specimens identified as ''N. tobaica'' in Rusjdi Tamin and Mitsuru Hotta's 1986 monograph〔 on Sumatran ''Nepenthes'' actually represent both ''N. angasanensis'' and ''N. tobaica''.〔 Some plants sold in the horticultural trade under the name ''N. tobaica'' are likely to represent a manmade cross between ''N. khasiana'' and ''N. ventricosa''.〔Catalano, M. 2009. ''Nepenthes''. In: ''Growing Carnivores — an Italian perspective''. Prague. pp. 50–57.〕 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 tobaica」の詳細全文を読む スポンサード リンク
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