heterogonous, a.
(-ˈɒgənəs)
[f. as heterogone a. + -ous.]
1. Bot. Having incongruous reproductive organs; applied by Asa Gray to flowers in which cross-fertilization is secured by the stamens and pistils being dimorphic or trimorphic.
| 1877 [see heterogone]. 1880 Gray Struct. Bot. vi. §4. 225 They may be classed into those without and those with dimorphism of stamens and pistils, or, in other words, those with Homogonous and those with Heterogonous flowers. 1880 ― Bot. Text-bk. i. 236 Heterogonous trimorphism is known in certain species..; and the complication may have certain conceivable advantages over dimorphism. |
2. Biol. Exhibiting irregular reproduction; producing offspring dissimilar to the parent.
| 1883 Syd. Soc. Lex., Digenesis, heterogonous, the form of digenesis in which the buds produce animals differing in appearance from their progenitors. 1886 Ibid., Heterogonous, being of, or produced by, irregular generation. |
So heteˈrogonism, the condition of being heterogonous (in either sense).
| 1886 Syd. Soc. Lex., Heterogonism, the production of dissimilar offspring from similar parentage, as in Gymnoblasti where dissimilar gonosomes may arise from similar trophosomes. |