Hoping to send some dubious plants for identification. Dedicating himself to botany and the 'Cryptogamia' class, will send a list of desiderata to Smith. Requests any species of 'Hypnum'. Offers to send following plants found around Paris: 'Lobelia urens', 'Sison verticillatum', 'Phalaris oryzoides', 'Spergula sagimoides', 'Sium repens-jacquini', 'Buxbaumia foliosa', 'Jungermania multifida', and several lichens, 'Bryums', and 'Jungermanias'.

Thanks for plants, particularly pleased with 'Juncus jacquini'; 'Juncus pedatus'; 'Dianthus alpinus'; and 'L. croceus'. Encloses his list of desiderata [extant]. Sends specimens of 'Orchis coriophora'; 'Lobelia urens'; a new lichen he names 'Lichen atrocuber'; a 'Boletus' described in Murray's "S N" as 'Botelus rugosus' of Jacquin and the 'Boletus demidiatus' of [Carl Peter] Thunberg; and 'Botelus aubliquatus' of [Jean Baptiste François Pierre] Bulliard [(1742-1793) botanist] (no.2293), details on its worldwide habitat. Also sends some dubious plants for identification, listed. Will send 'Sium repens'. Asks Smith to construct a list of French desiderata from [Thomas François] Dalibard's [(1709-1799) physicist and botanist] "Florae parisiensis prodromus".