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The natural range of the carnivorous plant genus ''Heliamphora'' is restricted to the southern Venezuelan states of Amazonas and Bolívar, and to adjacent portions of northern Brazil and western Guyana, an area corresponding to the western part of the Guayana Shield. These plants are largely confined to the summits and foothills of the sandstone table-top mountains of the region, known as ''tepuis''. The genus has a highly disjunct distribution spread across two major groups of tepuis: the western range in Amazonas and the eastern range in Bolívar.〔Rice, B. (2012). (''Heliamphora'': the various ranges and tepuis ). The Carnivorous Plant FAQ.〕 The western range can be further subdivided into two complexes of neighbouring tepuis. The more southerly of these consists of Cerro de la Neblina, Cerro Aracamuni, and Cerro Avispa, and supports four ''Heliamphora'' species. The more northerly group of the western range, home to only two species, includes the massive Cerro Duida and neighbouring Cerro Huachamacari and Cerro Marahuaca. The remaining 17–19 species are native to the eastern range, which includes the Aprada Massif, Auyán Massif, Chimantá Massif, Eastern Tepuis chain, Los Testigos chain, and a number of outlying tepuis. Many of the summits of the eastern range are situated on a vast plateau known as the Gran Sabana. Only two species (''H. ciliata'' and ''H. heterodoxa'') are known with certainty from the Gran Sabana, and only ''H. ciliata'' is endemic to this habitat.〔McPherson, S., A. Wistuba, A. Fleischmann & J. Nerz (2011). ''Sarraceniaceae of South America''. Redfern Natural History Productions, Poole.〕 The altitudinal distribution of ''Heliamphora'' ranges from 860 m above sea level for populations of ''H. neblinae'' on Cerro Avispa to as much as 2994 m for plants of ''H. hispida'' growing near the summit of Pico da Neblina in Cerro de la Neblina.〔 ==Key== Tepui names shown in the tables are those used in ''Flora of the Venezuelan Guayana'' and ''Sarraceniaceae of South America'', with alternate names and spellings given in brackets. Many additional orthographic variants are likely to exist and some localities remain the subject of considerable toponymic confusion; these cases are covered in the Notes section. Many of the tepui heights are approximate and likely to change as more accurate measurements become available. Only tepuis known to support ''Heliamphora'' are included in the tables (for example, not all parts of the Chimantá Massif or Eastern Tepuis chain are listed). Formally described species are listed first, followed by undescribed species, and finally natural hybrids. Where published information is available, the altitudinal distribution of a taxon at a particular locality is given. In cases of unconfirmed locality records, the taxon name is preceded by a question mark (?). Coordinates given correspond to the approximate centre points of tepui summit plateaus (though in the case of fragmented tepui complexes such as Cerro de la Neblina, the centre point itself may not lie on any plateau). Unless otherwise indicated, all other information presented in the tables is sourced from ''Sarraceniaceae of South America''. 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「Distribution of Heliamphora」の詳細全文を読む スポンサード リンク
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