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''Nepenthes × bauensis'' (; after Bau, Sarawak) is a natural hybrid involving ''N. gracilis'' and ''N. northiana''.〔McPherson, S.R. & A. Robinson 2012. ''Field Guide to the Pitcher Plants of Borneo''. Redfern Natural History Productions, Poole.〕 ''N. × bauensis'' is intermediate in appearance between its two parent species. It displays the clumping habit and vine growth of ''N. gracilis'', but can be distinguished from that species on the basis of its larger leaves and stems. The influence of ''N. northiana'' is most obvious in the pitcher morphology. In particular, the peristome is wider than in ''N. gracilis'' and has scattered red bands. Pitchers are up to 15 cm high and may be pale green to purplish-red in colour. Like its parent species, ''N. × bauensis'' is a lowland plant that grows at an elevation of around 100 m. It is terrestrial in nature and inhabits swampy areas surrounding the limestone hills to which ''N. northiana'' is endemic. This hybrid appears to be very rare and only a few plants have been found. It is known from a single location. ''N. × bauensis'' is one of only three known natural hybrids involving ''N. northiana'', the others being ''N. × cincta'' and a cross with ''N. mirabilis''. Image:Nepenthes bauensis11.jpg|Lower pitcher Image:Nepenthes bauensis22.jpg|Upper pitcher ==References== * Fretwell, S. 2010. Twelve days in Borneo – a dream expedition: part 4. ''Victorian Carnivorous Plant Society Journal'' 98: 6–13. *Lee, C. C. 2004. ''Nepenthes''. In: Sarawak Bau Limestone Biodiversity. H.S. Yong, F.S.P. Ng and E.E.L. Yen (eds). ''The Sarawak Museum Journal'' Vol. LIX, No. 80; Special Issue No. 6: 71-77. *(WildBorneo: ''Nepenthes × bauensis'' ) 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 × bauensis」の詳細全文を読む スポンサード リンク
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