24 General Key to the Families 



XXXVIII. LEGUMINOS^. PULSE FAMILY 



A very large family of shrubs, herbs and vines ; leaves alternate, 

 with stipules, usually compound; flowers mainly in racemes or 

 axillary, terminal, solitary or capitate, papilionaceous or sometimes 

 regular, the single simple free pistil becoming a legume in fruit; 

 fruit seeds solitary or several, without albumen. 



SUBFAMILY PAPILIONOIDE^ 



I. LUPINUS. (Tourn.) L. 



i. L. subalpinus. P. and R. Alpine Lupin. 

 II. TRIFOLIUM. (Tourn.) L. 



1. T. repens. L. White Clover. (Introduced.) 



2. T. hybridum. L. Alsatian Clove*. (Introduced.) 



3. T. pratense. L. Red Clover. (Introduced.) 



III. MELILOTUS. (Tourn.) Hill. 



i. M. officinalis. (L.) Lam. Yellow Melilot. (Intro- 

 duced.) 



IV. ASTRAGALUS. (Tourn.) L. 



1. A. aboriginorum. Richards. Indian Milk Vetch. 



2. A. tenellus. Pursh. Loose-flowered Milk Vetch. 



3. A. adsurgens. Pall. Ascending Milk Vetch. 



4. A. hypoglottis. L. Purple Milk Vetch. 



5. A. alpinus. L. Alpine Milk Vetch. 



6. A. Macounii. Macoun's Milk Vetch. 



7. A. convallarius. Greene. Slender Milk Vetch. 

 V. PHACA. L. 



i. P. americana. (Hook.) Rydb. Lentil Vetch. 

 VI. OXYTROPIS. DC. 



1. O. viscida. Nutt. Alpine Oxytrope. 



2. O. splendens. Dougl. Showy Oxytrope. 



3. O. deflexa. Drooping-fruited Oxytrope. 



4. O. podocarpa. Gray. Inflated Oxytrope. 



5. O. Lamberti. (Pursh.) Kuntze. Locozveed. 



6. O. monticola. Gray. Mountain Oxytrope. 

 VII. HEDYSARUM. (Tourn.) L. 



i. H. boreale. Nutt. Purple Hedysarum. 



