HITCHCOCK: PLANTS OF AMES, IOWA. 493 



Amphicarp.ka comosa, (L.) Riddell, Synops. 1835. — Glycine co- 

 mosa, L. Spec. — A. motioica, Ell. Joiirn. Acad. Phil. i. iSiS. .^ 



Low copses ; frequent. 

 Cassia Cham.t;crtsta, L. Spec. 



Dry. sterile soil; frequent. 

 GYMXOCLADUS DIOICUS, (L.) Koch, Deudr. \S%^-\%~o.— Guilatidina 

 dioica, L. Spec. — Gymtiocladtis Cafiadensis, Lam. Diet. i. 



Low woods; infrequent. 

 Gleditschia triacanthos, L. Spec. 



Lowland woods ; frequent. 



ROSACEA. 



Pruxus Americana, Marsh. Arbust. 



Thickets; frequent. 

 P. Pennsylvanica, L. f. Suppl. 178L 



According to Prof. Budd. this is not uncommon in upland woods. 

 P. Virginiana, L. Spec. 



I'pland woods ; frequent. 

 P. SEROTiNA, Ehr. Beitr. iii. 1789. 



Woods; frequent. 

 RUBUS OCCIDENTALIS, Li. SpeC. 



Upland woods ; frequent. 

 R. viLLOSA, Ait. Hort. Kew, 



Upland woods; frequent. 

 Geum album, Gmel. Syst. ii. 1791. 

 Woods ; frequent. 



Watson's Index gives as synonyms of tliis : G. Canadetise, Jacq. Hort. Vind. ii. 



1772, {G. Canaden^e, Murr. in Comm. Soc. reg. sci. Goett. v. 17S3.'' is G. strictum 



Ait. Hort. Kew.] and G. Carolinianum, Walt. Fl. In the absence of sufficient 



literature, I has-e retained G. album, as given in tlie N. Y. Catalogue and Britton 



Fl. N. Jersey. 



G. Virginian UM, L. Spec. 

 Low ground; frequent. 



Fragaria Virginiana, Duch., var. Tllinoensis, (Prince), Grav, 

 Man. 5th ed. — F. Illinoensis, Prince (said to be in a seedsman's 

 catalogue). 



Moist prairie and banks; abundant. 

 POTENTILLA ARGUTA, PuFSh, Fl. 



Prairie; abundant. 

 P. NoBVEGiCA, L. Spec. 



Low ground; abundant. 



Erect, simple, or branching above; leaves all 3.foliolate; petals about the lengtli 

 of the calyx. 



