66 RYDBERG: NOTES ON ROSACEAE 
ones occasionally with one or two lobes; foliage not 
sweet-scented. 
Flowers solitary, bractless; achenes inserted only in the 
bottom of the hypanthium; leaflets very small. 
Pistils few; styles deciduous with the upper part of the hypan- 
thium which falls off like a ring. 
I. CANINAE 
A climbing rose. 
II. CINNAMOMIAE 
Flowers mostly solitary; petals usually 2.5 cm. long or more; 
hy hium in fruit 12-20 mm. thick; prickles straight. 
Prickles stout, more or less plaiae below, ascending; 
pte rachis, and lower ar epee of the leaflets not 
pilos 
xcept sometimes on the 
Leaflets very thin, pale and EER th EERE 
ulent, but not muriculate beneath. 
Leaflets thicker, dark-green on both pe fy conspicu- 
ously glandular-muricate beneath. 
Prickles weak, almost terete; Asa rachis, and lower 
s of the leaflets distinctly p 
Flowers santhe corymbose; if eaicgiy: a He 2 cm. long 
or less; fruit rarely more than I cm. thic 
Prickles more or less curved; leaves more or less softly 
villous or pilos 
Leaflets not at a glandular beneath, mostly simple- 
toothed; hypanthium with a distinct neck, often 
ovoid. : 
Leaflets conspicuously glandular beneath, more or less 
double-toothed. 
Hypanthium with a distinct neck. 
Leaflets broadly oval or obovate; fruit sub- 
globose or broadly o 
Leaflets elliptic; fruit clongate-ellipsotd 
Hypanthium depressed-globose, without a neck; 
leaflets elliptic or narrowly oval. 
Prickles straight or nearly so 
H ium normally not & bristly: 
Hypanthium eae or nearly so; ok obsolete 
or inco ous. 
Sepals lanceolate, with long caudate-attenuate 
r rT 
ovate, often double-toothed with gland- 
tipped teeth, more or less glandular- 
granuliferous beneath. 
Leaflets very thin; prickles slender. 
II. CINNAMOMIAE. 
III. MINUTIFOLIAE. 
V. GYMNOCARPAE. 
1. R. rubiginosa. 
mn 
a 
. R. nutkana. 
. R. muriculata. 
R. Brownit. 
. R. californica. 
. R. Aldersonii. 
R. Greenei. 
. R. brachycarpa. 
