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 ANEMONES 



I. RANUNCULUS. (Tourn.) L. 



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



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



3. R. Eschscholtzii. Schlect. Snow Buttercup. 



4. R. Cymbalaria. Pursh. Creeping Crowfoot. 



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



Crowfoot. 



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



7. R. repens. L. Yellow Crowfoot. (Introduced.) 



8. R. pygmseus. Wahl. Pigmy Buttercup. 

 II. THALICTRUM. (Tourn.) L. 



1. T. occidentale. Gray. Western Meadow Rue. 



2. T. megacarpum. Torr. Veiny Meadow Rue. 



III. ANEMONE. (Tourn.) L. 



1. A. occidentalis. Wats. Chalice Cup. 



2. A. multifida. Poir. Wind Flower. 



3. A. Drummondii. Wats. Alpine Anemone. 



4. A. parviflora. Michx. Few-Howered Anemone. 



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



que Flower. 



TRIBE CLEMATIDE^ 



IV. CLEMATIS. L. 



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



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



tis. 



TRIBE HELEBORE^: 



V. CALTHA. (Rupp.) L. 



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



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

 VI. TROLLIUS. L. 



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



