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Chrysolepis
''Chrysolepis'' is a small genus in the beech family Fagaceae, endemic to the western United States. Its two species have the common name chinquapin. The genus occurs from western Washington south to the Transverse Ranges in Southern California, and east into Nevada.
==Description==
''Chrysolepis'' are evergreen trees and shrubs with simple, entire (untoothed) leaves with a dense layer of golden scales on the underside (hence the genus name, from Greek ''chryso-'', yellow, and ''lepis'', scale) and a thinner layer on the upper side; the leaves persist for 3–4 years before falling.
The fruit is a densely spiny cupule containing usually three sweet, edible nuts, eaten by the indigenous peoples. The fruit also provides food for birds and wildlife.
''Chrysolepis'' is related to the subtropical southeast Asian genus ''Castanopsis'' (in which it was formerly included), but differs in the nuts being triangular and fully enclosed in a sectioned cupule, and in having bisexual catkins. ''Chrysolepis'' also differs from another allied genus ''Castanea'' (chestnuts), in nuts that take 14–16 months to mature (3–5 months in ''Castanea''), evergreen leaves and the shoots having a terminal bud.
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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