Summary

List of most anomalous Leguminosae [from George Bentham].

Summary

JDH’s "grand speech" on receiving the Royal Medal.

Summary

Is Bentham’s list of aberrant genera biased by exclusion of genera with many species?

JDH’s belief that Aquilegia varieties are one species is consistent with their great interfertility.

Summary

Bentham’s list of aberrant genera: CD’s worry that he eliminated large genera a priori is half right. He eliminated those large, anomalous genera that virtually constitute natural orders. JDH criticises CD’s tabulations of aberrants.

Difficulty of distinguishing affinity and analogy in plants.

Summary

Debates aberrant species, e.g., Ornithorhynchus and Echidna, with JDH. CD argues they are result of extinction having removed intermediate links to allied forms.

Studying effects of disuse in wings of tame and wild ducks.

Tabulations showing that number of species in a genus is not correlated with number of genera in an order.