RYDBERG: NOTES ON ROSACEAE 49 
7. ROSA MICRANTHA Borrer 
This is often mistaken for R. rubiginosa but differs in the less 
rounded leaflets, the more ellipsoid fruit, the more deciduous 
sepals, the smaller petals, and the almost glabrous styles. The 
following specimens belong to it: 
MassacHusETTs: Manchester, Chamberlain; Ipswich, Morong. 
NEw York: Oak Point, Burnham 77; High Bridge, Elizabeth 
Knight; Fort Lee, Torrey Botanical Club. 
NEw JERSEY: Rocky Hill, Lighthipe; Great Notch, Nash 1056. 
MARYLAND: Rush River, Shull 347. 
VIRGINIA: Bedford, A. H. Curtiss. 
8. Rosa DUMETORUM Thuill. _ 
Closely resembling the Dog Rose but with the leaves pubes- 
cent beneath. The only record of this species from America is 
one from Bowling Green, Ss This might have been an 
escape from cultivation. 
9. Rosa CANINA L. 
The Dog Rose is well understood, though it is only sparingly 
naturalized in the Northeastern States. 
V. CAROLINAE 
Hypanthium globose or short-ellipsoid, rounded or barely 
' acute at the base. 
Infrastipular prickles decidedly curved. 
Leaflets finely ssa rmcelt Sagi or oblanceolate; 
prickles short and s 
Leaflets mostly 7; escieby usually corymbose on 
erect hagher ie: fruit depressed-globose, about 
10. R. palustris. 
peo ae 5; flowers usually solitary or two 
together on spreading ee fruit ellipsoid, 
acute at the base, 8-9.mm. 
Leaflets coarsely serrate, oval or eae 
Leaflets not shining; prickles short and weak. ‘ 
Leaflets obovate; fruit 10-12 mm. in diameter. 12. R. gemella. 
— — fruit 7-10 mm. in 
dia: 13. R. nanella. 
ets pene. prickles long and stout. 14. R. virginiana. 
Infrastipular prickles straight or slightly curved. 
Leaflets oval or obovate or broadly lance-elliptic, 5-7 
(in R. virginiana rarely 9). 
11. R. dasistema. 
