46 RypBEeRG: NoTES ON ROSACEAE 
Key to the groups 
Styles much exserted, united, about equaling the stamens; 
stipules adnate; sepals reflexed, deciduous; stem 
climbing, with curved prickles. I. SYNSTYLAE. 
Styles not exserted, or only slightly so, distinct; stigmas 
forming a head closing the mouth of the hypan- 
thium. 
Stipules almost free from the petioles; introduced 
imbers or trailers II. BRACTEATAE. 
Stipules for most of theiz length adnate to the petioles; 
plants rarely climbing. 
Sepals after flowering reflexed and soon deciduous. 
Achenes inserted both on the inner walls and in 
the bottom of the hypanthium; prickles 
rarely a 
Stem pri 
aa ae rarely 7, large, round; stem 
with both scattered prickles and bris- 
tles; flowers mostly solitary. III. GALLicae. 
Leaflets mostly 7; stem with strong 
prickles, very rarely with bristles. IV. CANINAE. 
Stem unarmed. VI. CINNAMOMIAE. 
Achenes inserted only in the bottom of the 
bristly hypanthium; stem with infrastipular 
prickles and usually with numerous bristles 
on the young shoots. V. CAROLINAE. 
Sepals after flowering erect, connivent, long- 
persistent on the fruit; achenes inserted both 
nm the inner walls and in the bottom of the 
hypanthium. 
Flowers corymbose or, if solitary, then sup- 
ported by a bract; leaflets large. 
Stem with scattered | ghee rarely with in- 
termixed bri 
scented (in R. rubiginosa and R. tomen- 
tosa). IV. CANINAE. 
Stem, at least the young shoots, bristly; 
prickles infrastipular or lacking; sepals 
entire or the outer sometimes with one or 
two lobes; foliage not very sweet-scented. VI. CINNAMOMIAE. 
Flowers solitary, bractless; leaflets very small. VII. PIMPINELLIFOLIAE. 
I. SYNSTYLAE 
Stipules pectinate. 1. R. multiflora. 
Stipules entire or denticulate 
Leaflets glabrous or slightly pubescent on the veins be- 
neath, dark green and shining above 2. R. setigera. 
Leaflets velutinous-pubescent beneath, rather dull above. 3. R. rubifolia. 
