1 16 Botany of Illinois and Missouri. 



Caltha palustris. Lin. 

 Hab. Swamps in Illinois, and Missouri — April. 



Hepatica triloba. Wild. 

 Hab. Banks of the Illinois and Mississippi, common — 

 March. 



Ranunculus fluviatilis. Lin. 

 Hab. Ponds near Herculaneum, Missouri — May — June, 



Ranunculus abortivus. Lin. 

 Ranunculus fascicularis. Muhl. 

 Hab. Inundated banks of the Mississippi and Illinois — 

 April. 



Ranunculus N. S. ? 



R. foliis omnibus radicalibus, pubescentibus, petiolatis, 

 3 — 5 sectis ; scapo villoso, unifloro, foliis longiore ; calyce 

 persistente ; petalis oblongo-ovatis. 



Obs. Root, fibrous and fasciculated. Leaves all radi- 

 cal, of the length of the scape, sometimes whitish pubes- 

 cent on the under surfaces. Scape one flowered, villous. 

 Plant from one half to two inches high. It closely resem- 

 bles R. collinus of Robert Brown, as described in De Can- 

 dolle's Prodromus ; but I have not the means of com- 

 parison. 



Hab. Wet Prairies near Fort Clark, on the Illinois — 

 April. 



Brasenia peltata. Willd. 



Hab. Ponds four miles west of St. Louis — June. 



DIDYNAMIA. GYMNOSPERMIA. 



Teucrium canadense. Lin. 

 Hab. Prairies near St. Louis— June, July. My wes- 

 tern specimens undoubtedly belong to this species, the leaves 

 being ovate-lanceolate, but the bracts are very little longer 

 than the calyx. This species, however, is most probably not 

 distinct from the T. virginicum. 



Mentha canadensis. Lin. 

 Hab. Banks of the Mississippi, June. Identical with 

 M. borealis of Michaux. 



Isanthus coeruleus. Mich. 

 Hab. Prairies near St. Louis — August, 



