62...’ RYDBERG: NOTES ON ROSACEAE—XIV 
III. CAROLINAE 
Leaflets not subcoriaceous. Srey 
Infrastipular prickles decidedly curved, short, stout. 4. R. palustris. 
Infrastipular’ prickles. straight (rarely slightly curved), 
slender. 
Leaflets decidedly pubescent beneath. 5. R. Lyont. 
Leaflets glabrous or pubescent only on the. veins be- 
neath. 
Leaflets not glandular-dentate, the teeth usually 
simple. 6. R. carolina. 
Leaflets glandular-dentate, often with double 
teeth. % ; 7. R. serrulata. 
Leaflets subcoriaceous, densely pubescent beneath. 8. R.rudiuscula. 
4. RosA PALUSTRIS Marsh. 
This has been reported only in the Mississippi and Minnesota 
River valleys, where the more pubescent western form has been 
found 
5. Rosa Lyonr Pursh 
Kansas: Cherokee County, Hitchcock 978. 
Iowa: Iowa City, 1916, Wylie. 
Also reported from Minnesota. 
6. ROSA CAROLINA L. 
This has been reported from Minnesota and Kansas, but 
no specimens have been seen. It is found also in Wisconsin 
and Missouri. 
7. ROSA SERRULATA Raf. 
This has been reported from Iowa, but no specimens are 
now at hand. 
8. RosA RUDIUSCULA Greene 
This belongs to the Carolina and not to the Cinnamomea 
group, having the hypanthium bristly and with the achenes 
inserted in the bottom only. The infrastipular prickles are 
small and scarcely stronger than the bristles. It also has spread- 
ing and deciduous sepals; and the leaflets are thicker and firmer 
than in R. carolina and R. Lyoni. The flowers are usually 
corymbose and the plant has the general aspect of R. suffulta. 
Dr. Greene in the original publications cited several specimens 
\ 
that do not belong to the species, . 
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