IOWA ACADEMY OF SCIENCES. 
227 
Rubus L. 
299. R. strigosus Michx. Wild Red Raspberry. Fre- 
quent in woods. 
300. R. occidentals L. Black Raspberry. Yery common 
in woods, and introduced by birds into artificial 
groves. The original of the blackcap of the 
garden. 
301. R. villosus Ait. Blackberry. Rare, in a ravine 
west of Estherville. 
Fragaria L. Strawberry. 
302. F. virginiana Duchesne. (P. virginiana var. illi- 
noensis Prince). Very common on the prairies. 
303. F. vesca L. Rather rare in woods. 
PoTENTILLA L. 
304. P. arguta Pursh. Frequent on dry prairies. 
305. P. monspeliensis L. (P. norvegica L.) Common, 
shores of lakes and streams, and in cultivated 
fields. 
306. P. paracloxa Nutt, (non P. supina L.) Frequent 
on the shores of lakes. 
307. P. canadensis L. Yery rare ; collected but once 
southeast of Armstrong. 
Comarum L. 
308. C. palustre L. {Potentilla palustris Scop.) Marsh 
Five-finger. Rare in bogs in the eastern half of 
the county. 
Geum L. 
309. 6r. canadense Jacq. (6r. album Gmelin) White 
Avens. Frequent in woods. 
Agrimonia L. 
310. A. hirsuta (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 7 . 
312. R. arkansana Porter. Yery common on prairies. 
Yery prickly; leaflets 5 to 9. 
