RYDBERG: NOTES ON ROSACEAE 
Leaflets green on both sides; petals 
. 9 
Leaflets pale beneath; petals about 
ae) 
Leaflets not very thin, dark-green; 
prickles stout. 
Leaves scarcely pubescent beneath. ae 
Leaves decidedly pubescent beneath 
s rather simply serrate; 
hypanthium pilose when yo II 
Leaflets conspicuously double-ser- 
rate; hypanthium glabrous. 52, 
Stipules, ect nd rachis not conspicu- 
ously glandular (stipules glandular- 
a in no. 18) 
Leaflets glabrous or nearly so 
et eset oval, 3—5 cm. long. 13. 
te to elliptic, rarely 3 
cm. long. 
Leaflets usually obovate, not shin- 
ing; plant not conspicuously 
prickly. 
Leaflets elliptic, shining; plant 
y very prickly. £5. 
Leaflets more or less pubescent beneath. 
Leaflets villous or pilose beneath, 
rounded or broadly oval; prickles 
stout. 
Leaflets sparingly pubescent on 
both sides, thin; prickles rather 
few. 
Leaflets pubescent on both sides, 
densely so Pie thick; 
Leaflets finely perlent ehcau: 
prickles rather 
Leaflets ae or subor- 
bicular, thick; stipules conspicu- 
ously glan ar-denticulate; pe- 
g- 
Leaflets elliptic to oval; stipules 
slightly if at all glandular- 
dentate; sn larger. 
Sepals decidedly glandular on 
the back; prickles few, small 
and ascending. 
Sepals not glandular on the 
back. 
Lal 
oO 
67 
. R. pinetorum. 
. R. calavera. 
R. muriculata. 
. R, santae-crucis. 
R. Dudleyi. 
R. rivalis. 
14. R. chrysocar pa. 
R. mohavensis. 
. R. myriantha. 
17. R. Davyi. 
R. rotundata. 
. R. pisocarpa. 
