1 6 General Key to the Families 



times with stipule-like appendages, alternate or rarely opposite; 

 flowers polypetalous or apetalous with the calyx often coloured like 

 a corolla, hypogynous ; fruit achenes or follicles or baccate. 



TRIBE ANEMONEiE 



I. Ranunculus. (Tourn.) L. 



1. R. acris. L. Meadow Buttercup. (Introduced.) 



2. R. Macounii. Britton. Macoun's Buttercup. 



3. R. Eschscholtzii. Schlect. Snozv Buttercup. 



4. R. Cymbalaria. Pursh. Creeping Crozvfoot. 



5. R. aquatilis. (L.) var. capillaceus. DC. Water 



Crozvfoot. 



6. R. reptans. (L.) Mey. Creeping Spearzvort. 



7. R. repens. L. Yellozv Crozvfoot. (Introduced.) 



8. R. pygmseus. Wahl. Pigmy Buttercup. 

 II. Thalictrum. (Tourn.) L. 



1. T. occidentale. Gray. Western Meadozu Rue. 



2. T. megacarpum. Torr. Veiny Meadozv Rue. 



III. Anemone. (Tourn.) L. 



1. A. occidentalis. Wats. Chalice Cup. 



2. A. multifida. Poir. Wind Flozver. 



3. A. Drummondii. Wats. Alpine Anemone. 



4. A, parviflora. Michx. Fezv -flozver ed Anemone. 



5. A. patens var. Wolfgangiana. (Bess.) Koch. Bas- 



que Flozver. 



TRIBE CLEMATIDE^ 



IV. Clematis. L. 



1. C. ligustici folia. Nutt. White Clematis. 



2. C. Columbiana. (Nutt.) T. and G. Purple Clema- 



tis. 



TRIBE HELEBOREyE 



V. Caltha. (Rupp.) L. 



1. C. leptosepala. DC. Alpine Marsh-marigold. 



2. C. palustris. L. Marsh-marigold. 

 VI. Trollius. L. 



I. T. laxus var. cilbiflprus. Salisb. White Globe Flower, 



