Aesculus(redirected from Aesculus species)
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a genus of the family Hippocastanaceae of shrubs and trees. Called also horsechestnut, buckeye. Contains a toxic hydroxycoumarin glycoside esculin in seed pods and shoots; causes depression, tremor, incoordination, paralysis. Includes A. californica (California buckeye), A. glabra (Ohio buckeye), A. hippocastanum (horsechestnut), A. pavia (red buckeye), A. octandra (sweet buckeye).