ROSACEAE, 99 
1. Leaves entire. D. integrifolia. 
Leaves crenately serrate. 2. 
2. Flowers white: sepals narrow. D. octopetala. 
Flowers yellow; sepals ovate. D. Drummondii. 
Rusus. Bramble. 
Tardily deciduous mostly prickly shrubs with moderately 
slender more or less angular twigs; continuous pith of corre- 
sponding shape; alternate raised torn petiole-bases rather than 
distinct leaf-scars; no stipule-scars; ovoid sometimes superposed 
buds with several exposed scales; simple or mostly compound 
often toothed petioled leaves; conspicuous perfect usually clus- 
tered polypetalous perigynous flowers; and small drupe-like 
fruits in a cluster which breaks away from each persistent calyx 
with the end of the receptacle (blackberries), or separates from 
this, thimble-like (raspberries). 
1. Leaves simple: bark shredding: branches bristly, 
without prickles. (Flowering raspberries). 2. 
Leaves compound: bark not shredding. 4. 
2. Flowers white. 3. 
Flowers magenta. R. odoratus. 
3. Flowers usually solitary. R. deliciosus. 
Flowers usually several in a cluster. R. parviflorus. 
4. Leaflets 5-15, distinctly pinnate. (Flowering brambles). 5. 
Leaflets 3-5, nearly or quite palmate. 6. 
5. Flowers single. R. rosaefolius. 
Flowers double. R. rosaefolius coronarius. 
6. Leaves white beneath: fruit thimble-like. (Rasp- 
berries). 7. 
Leaves not white: fruit solid. 11. 
. Stems with glandular hairs. R. phoenicolasius. 
Stems not red-hairy. 8. . 
8. Stems with bristles and also somewhat prickly. 9. 
Stems prickly but scarcely bristly. 10. 
9. Fruit red. R. strigosus. 
Fruit amber. . R. strigosus albus. 
N 
