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Hesperelaea
''Hesperelaea'' is a plant genus with only one species, probably now extinct. ''Hesperelaea palmeri'' was found only on Guadalupe Island, a small island in the Pacific Ocean, part of the Mexican state of Baja California, about 400 km southwest of Ensenada. The last collection of the plant on the island was in 1875, so the species and the genus must now be presumed extinct.〔(Kew World Checklist of Selected Plant Families, ''Hesperelaea palmeri'' )〕 An intensive search for the plant in 2000 was unsuccessful.〔(JP Redman, TA Oberbauer, JL León de la Luz. 2000. La flora de Isla Guadalupe y sus islotes adyacentes, Baja California, México. Instituto Nacional de Ecología, México D.F. )〕
At the time of the collection of the type material in 1875, ''Hesperelaea palmeri'' was found only in a single canyon on the east side of the island. It was a shrub with broadly lanceolate leaves up to 5 cm long. Flowers were pale yellow, the petals over 10 mm long. The species was unusual in the family in having fully distinct petals.〔(Gray, Asa. 1876. Proceedings of the American Academy of Arts and Sciences 11: 83, ''Hesperelaea palmeri'' )〕〔Shreve, F. & I. L. Wiggins. 1964. Vegetation and Flora of the Sonoran Desert 2 vols. Stanford University Press, Stanford.
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==References==
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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