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The scales of the bud of Horsechestnut are considered to be homologous with petioles, by analogy with other members of the same family. In the Sweet Buckeye a series can be made, exhibiting the gradual change from a scale to a compound leaf. By Asa Gray. Ivison, Blakeman, Taylor and Co., New York, 1879. Horsechestnut. I. Branch in winter state: a, leaf-scars; b, bud-scars; c, flower-scars. 2.
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