In answer to CD’s query, FM thinks the seeds he sent were those of the sensitive Mimosa.

Reports his observations of movement of leaves of Bauhinia grandiflora and B. brasiliensis. They do not "sleep" in hot weather.

Sends some seeds of Pontederia he had fertilised.

Apologises for not having answered CD’s letters of 19 December [13564] and 4 January [13599] sooner.

Gives the results of his crossing experiments with Pontederia (Eichhornia) crassipes and P. azurea. Has also begun experiments on Heteranthera reniformis.

Thanks CD for sending three parts of the first volume of Bentham and Hooker’s Genera plantarum.