IOWA ACADEMY OF SCIENCES. 227 



RuBus L. 



291). //. strir/nsiis Michx. Wild Red Raspberry. Fre- 

 quent in woods. 



80(>. //. o(ri(/cnfa/is L. Black Raspberry. Very common 

 in woods, and introduced by birds into artificial 

 groves. The original of the blackcap of the 

 garden. 



301. B. I'mosus Ait. Blackberry. Rare, in a ravine 



west of Estherville. 

 Fragaria L. Strawberry. 



302. F. rin/liiidinf Duchesne. {F. viiyiniana var. ////- 



nocnsis Prince). Very common on the prairies. 

 808. F. vesra L. Rather rare in woods. 



POTENTILLA L. 



304. F. (u-(infa Pursh. Frequent on dry prairies. 



305. P. niOHspclieii.si.s L. [P. ttorr('(jira L.) Common, 



shores of lakes and streams, and in cultivated 

 fields. 



306. P. paradoxa Nutt. (non P. siipina L.) Frequent 



on the shores of lakes. 



307. P. cioiadensis L. Very rare; collected but once 



southeast of Armstrong. 



COMARUM L. 



308. C. pal list re \j. iPiAentilla pcdustris ^co]).) Marsh 



Five-finger. Rare in bogs in the eastern half of 

 the county. 

 Oeum L. 



309. (r. canadense Jacq. (G. dlbnm Gmelin) White 



Avens. Frequent in woods. 

 Agrimonia L. 



310. .1. hirsnta (Muhl.) Bicknell. (non A. eupatoria 



L.) Common in woods. 

 Rosa L. Wild Rose. 



311. R. blanda Ait. Common in woods. Leaflets 3 to 5; 



prickles few. 



312. P. arkansana Porter. Very common on prairies. 



Very prickly; leaflets 5 to 9. 



