488 NORTH AMERICAN FLORA 
Leaflets rounded at the apex, pale be- 
neath; hypanthium less than 1 cm. 
broad, in fruit; prickles small.- 
Leaflets acute at the apex, not paler 
beneath; hypanthium more than 12 
mm. broad in fruit; prickles long. 
Leaves decidedly pubescent beneath. 
Leaflets rather simply serrate; hypan- 
thium pilose when young. 
Leaflets conspicuously double-serrate; 
hypanthium glabrous. 
Leaflets glabrous above, scarcely 
glandular beneath, 3-6 cm. long. 
Leaflets pubescent on both sides, 
glandular-puberulent beneath, 1—2 
cm. long. 
Leaflets oblong to oval. 
Leaflets puberulent as well as glandular-granu- 
liferous, not pale beneath. 
Leaflets conspicuously glandular double- 
toothed ; veins beneath glandular. 
Leaflets neither conspicuously glandular 
double-toothed, nor glandular on the veins. 
Leaflets thin, glabrous or merely glandular- 
pruinose, pale beneath. 
Stipules, petiole, and rachis not conspicuously glandular. 
Leaflets glabrous or nearly so. 
Leaflets broadly oval, 3-5 cm. long. 
Leaflets obovate to elliptic, rarely 3 cm. long. 
Leaflets usually obovate, not shining. 
Leaves yellowish-green; fruit orange; cor- 
ymbs several-flowered. 
Leaves dark-green above, paler beneath; 
fruit purplish-red; flowers 1-3. 
Leaflets elliptic, shining. 
Leaflets more or less pubescent beneath. 
Leaflets villous or pilose beneath. 
Leaflets broadly obovate, cuneate at the base, 
densely pubescent beneath; prickles 
slender. 
Leaflets mostly broadly oval, rounded at the 
base; prickles stout. 
Leaflets sparingly pubescent on both 
sides, thin; prickles rather few. 
Leaflets pubescent on both sides, densely 
so beneath, thick; prickles very numer- 
ous. 
Leaflets finely puberulent beneath; prickles weak, 
except in R. lerrans. 
Leaflets rounded-oval or suborbicular, thick; 
stipules glandular-denticulate; petals less 
than 1 cm. long. 
Leaflets elliptic to oval or obovate; stipules 
slightly if at all glandular-dentate; petals 
larger. 
Leaflets elliptic or oval, equally green on 
both sides. 
Sepals decidedly glandular; leaflets thin 
and soft; plant with few small prickles. 
Sepals not glandular or only rarely 
slightly so. 
Leaflets broadly oval, thin, 2-5 cm. 
long; plant nearly unarmed. 
Leaflets narrowly oval, less than 3 
; cm. long. , 
Leaflets thick; plant with few 
prickles. 
Leaflets thin; plant very prickly. 
Leaflets obovate; or, if elliptic, more or less 
glaucous beneath. 
Leaflets very thin, very sharply serrate, 
equally green on both sides; sepals 
with a few bristles near the margin; 
prickles very slender. 
Leaflets firmer; sepals not bristly near 
the margin. 
Young shoots armed with stout, flat 
prickles; fruit about 15 mm. 
broad. 
86. 
61. 
87. 
88. 
89. 
70. 
90. 
oie 
oF 
93: 
94. 
Oo: 
96. 
oe 
98. 
38). 
100. 
101. 
102. 
103. 
104. 
105. 
a 
aw 
aw 
[VOLUME 22 
. bidenticulata. 
. muriculata. 
. Sanctae-Crucis. 
. corymbifiora. 
. Dudleyi. 
. myriadenia. 
. Fendleri. 
. hypoleuca. 
. rivalis. 
. chrysocar pa. 
. Woodsii. 
. mohavensis. 
. Johnstonii. 
. myriantha. 
. Davyi. 
. rotundata. 
. pisocarpa, 
. salictorum. 
. ultramontana. 
. gratissima. 
. praetincta. 
. tervens. 
