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''Calla'' (Bog Arum, Marsh Calla, Wild Calla, and Water-arum〔Dickinson, T.; Metsger, D.; Bull, J.; & Dickinson, R. (2004) ROM Field Guide to Wildflowers of Ontario. Toronto:Royal Ontario Museum, p. 62.〕) is a genus of flowering plant in the family Araceae, containing the single species ''Calla palustris''. It is native to cool temperate regions of the Northern Hemisphere, in central, eastern and northern Europe (France and Norway eastward), northern Asia and northern North America (Alaska, Canada, and northeastern contiguous United States).〔(Kew World Checklist of Selected Plant Families )〕〔Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.〕〔Herkert, J.R. & Ebinger, J.E. (eds.) (2002). Endangered and Threatened Species of Illinois: status and distribution 1: 1-161. Endangered species protection board, Springfield, Illinois.〕〔Sabirova, N.D. & Sabirov, R.N. (2011). New and rare vascular plant species of Northern Sakhalin. Byulleten' Glavnogo Botaniceskogo Sada 197: 80-86.〕 It is a rhizomatous herbaceous perennial plant growing in bogs and ponds. The leaves are rounded to heart-shaped, long on a petiole, and broad. The greenish-yellow inflorescence is produced on a spadix about long, enclosed in a white spathe. The fruit is a cluster of red berries, each berry containing several seeds.〔(Flora of North America, vol 22, Water arum, wild calla, ''Calla palustris'' Linnaeus, Sp. Pl. 2: 968. 1753. )〕〔(Flora of China, Vol. 23 Page 17, 水芋 shui yu, ''Calla palustris'' Linnaeus, Sp. Pl. 2: 968. 1753. )〕 The plant is very poisonous when fresh due to its high oxalic acid content, but the rhizome (like that of ''Caladium'', ''Colocasia'', and ''Arum'') is edible after drying, grinding, leaching and boiling.〔A Dictionary of Flowering Plants and Ferns - JC Willis〕〔(Plants for a Future: ''Calla palustris'' )〕〔(Pharmacognosy, Wild calla-Calla palustris-Poisonous plants )〕 The genus formerly also included a number of other species, which have now been transferred to the separate genus ''Zantedeschia''. These plants, from tropical Africa are, however, still often termed "calla lilies", but should not be confused with ''C. palustris''. == References == * 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「Calla」の詳細全文を読む スポンサード リンク
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