This modification cannot in one sense be considered as a monstrosity, for analogous structures naturally occur in other orders, as with Saxifragae and Aristolochiaceae.
Darwin, Charles, The Variation of Animals and Plants...(2010)
n family of birthworts (including wild ginger)
Syn|Hyper
birthwort family, family Aristolochiaceae
dicot family, magnoliopsid family
family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination