TLDR
In the family of the Scrophulariaceae I experimented on species in the six following genera: Mimulus, Digitalis, Calceolaria, Linaria, Verbascum, and Vandellia.
[3/2. SCROPHULARIACEAE.—Mimulus luteus.via the TL;DR App
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Written by charlesdarwin | On the Origin of Species By Means of Natural Selection