What is of two kinds. (Bot.) Partaking of two natures, as the perianth of some endogenous plants, where the outer surface is calycine, and the inner petaloid called?

ambigenous — Of two kinds. (Bot.) Partaking of two natures, as the perianth of some endogenous plants, where the outer surface is calycine, and the inner petaloid. (Webster's 1913.)

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