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Cypripedium irapeanum
The Irapeao's Cypripedium or Pelican Orchid (''Cypripedium irapeanum'') is a species of orchid. It has a widespread distribution from the central Mexico states of Sinaloa and Durango south to Guatemala and Honduras.〔Cribb. 1993. The genus ''Cypripedium'' in Central America. Orquídea (Mexico City) 13(1–3): 205–214.〕〔Breedlove, D.E. 1986. Flora de Chiapas. Listados Florísticos de México 4: i–v, 1–246.〕 They are found in mixed pine and oak forests on well-drained limestone slopes and in areas with volcanic and clay soil which are rich in metals. They can be found in some areas in groups of hundreds.〔(www.cypripedium.de/forum/messages/811.html )〕 They bloom from early June to late July.
The plant is tall, 1 to 1.5 m, and is pubescent with clasping elliptic to lanceolate cauline leaves in a single stem. The showy yellow flowers are 12 cm and open from bottom to top in a raceme of one to eight flowers.〔(''The Internet Orchid Species Photo Encyclopedia'' )〕 The balloon-shaped lip has a fine net pattern and an open bowl with an enrolled margin. There are purple-brown spots toward the rear of the bowl. They propagate both by rhizomes and from many minute seeds that are propelled from a capsule which erupts from the inferior ovary.〔Ames, O. & D. S. Correll. 1952. Orchids of Guatemala. Fieldiana, Botany 26(1): i–xiii, 1–395〕
Some people have reported a contact dermatitis after handling these plants, and they are extremely difficult to cultivate as they rely on a symbiotic fungus for nutrients.
== References ==
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抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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