34 BOTANICAL GAZETTE [JULY 
Bushes not very small; upper stipules and bracts more or less 
dilated ; receptacles rarely glandular-hispid - 13 
13 Paired cauline prickles stout, more or less triangular, with straight 
tips; upper stipules and bracts much dilated ; leaflets often 
with glandular compound teeth; inflorescences often one- 
flowered ; corolla usually very large; fructiferous receptacles 
large and with large akenes, rarely glandular-hispi 
R. Nutkana Presl 
Paired cauline prickles not stout, slender or quite slender; upper 
stipules and bracts moderately dilated; leaflets usually with 
simple teeth; inflorescences usually many-flowered ; corolla 
middle-sized or small; fructiferous receptacles small or quite ; 
small - - - - - - - 
pagans aes 
14 Stipules and bracts quite deeply denticulate ; foliar teeth directed 
towards apex ; sepals more or less silky outside 
R. gratissima Greene 
Stipules and bracts entire; foliar teeth quite open; sepals not @ 
silky - - - - - R. pisocarpa A. Gray 
BRUSSELS, BELGIUM, 
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