Lythrum. Wants to examine fresh flowers of Lythraceae. Lythrum salicaria has interested him very much.
Microscopes.
Asks whether JDH can think of plants that have different coloured anthers or pollen in same flowers (as in Melastoma) or on same and in different plants as in Lythrum. Would be a safe guide to dimorphism.
Observation of action of pollen in Linum grandiflorum.