Hamamelidanthum


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Noun1.Hamamelidanthum - genus of fossil plants of the Oligocene having flowers resembling those of the witch hazel; found in Baltic region
dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
Hamamelidae, subclass Hamamelidae - a group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder