General Key to the Families 23 



4. P. dissecta var. multisecta. (Wats.) Rydb. Dis- 



sected Cinque foil. 



5. P. dissecta var. pinnatisecta. Leafy Cinque foil. 



6. P. arguta. Pursh. Tall Cinquefoil. 



7. P. norvegica. (L.) Rydb. Rough Cinquefoil. 



8. P. Hippiana. Lehm. Woolly Cinquefoil. 



9. P. gracilis. Dougl. Graceful Cinquefoil. 



10. P. nivea. L. Alpine Cinquefoil. 



11. P. uniflora. Ledeb. One-flowered Cinquefoil. 



12. P. fruticosa. L. Shrubby Cinquefoil. 



13. P. palustris. (L.) Scop. Purple Cinquefoil. 

 IX. GEUM. L. 



1. G. triflorum. Pursh. Long-plumed Avens. 



2. G. strictum. Ait. Yellow Avens. 



3. G. macrophyllum. Willd. Large-leaved Avens. 



TRIBE RUBEJE 



X. RUBUS. (Tourn.) L. 



1. R. parviflorus. Nutt. Capberry. 



2. R. strigosus. Michx. Red Raspberry. 



3. R. triflorus. Richards. Dwarf Raspberry. 



4. R. pedatus. Smith. Creeping Raspberry. 



5. R. arcticus. L. Arctic Raspberry. 



6. R. spectabilis. Pursh. Salmonberry. 



TRIBE 

 XI. DRYAS. L. 



1. D. octopetala. L. Wood Nymphs. 



2. D. Drummondii. Richards. Drummond's Dryas. 

 XII. ROSA. (Tourn.) L. 



1. R. acicularis. Lindl. Prickly Rose. 



2. R. Macounii. Macoun's Rose. 



3. R. gymnocarpa. Nutt. Tiny Rose. 



TRIBE PRUNED 



XIII. PRUNUS. (Tourn.) L. 



i. P. demissa. (Nutt.) Dietrich. Western Choke 

 Cherry. 



