Origin of dimorphous
Examples from the Web for dimorphic
So it is, as I have myself observed, with some dimorphic plants.On the Origin of Species|Charles Darwin
The occurrence of dimorphic and non-dimorphic species in the same genus is quite the same as I find in Linum.
The two basal blooms are dissimilar or dimorphic both in shape and colour, being tawny yellow spotted with purple.Orchids|James O'Brien
Hottonia is dimorphic, with pollen of very different sizes in the two forms.
Dimorphic flowers are frequent, as in the bog-bean (Menyanthes).