95 Inflati. 



group is probably nearest related to the lentlginosus group 

 Flowers purple. Calyx teeth half as long as tube. Leaves 



and poiis nearly smooth. 57 Crotalarioe. 



Flowers light-colored. Calyx teeth as long as tube. 



Leaves densely white-woolly. Pods about smooth. 58 Miguelensis. 

 Flowers purple-tipped. Whole plant silvery-silky. 59 Magdalense. 



A3BCD3E. Pods ovate, narrowed at base into a very thick 

 pseudostipe, cartilaginous. Flowers white (cream-colored 

 dry), about 1 cm. long, stubby and much arched, in loose 

 racemes. Leaflets several pairs. 

 P(5ds rigid, ascending 2 cm long. 60 oocarpus, 



A3BC2D. Pods jointed to a minute boss within the calyx and 

 so minutely stipitate (stipe is about 2 mm. long in We- 

 therilli), falling away from it readily, conspicuously ob- 

 licji.'e, thp ventral suture mostly straight. Flowers short, 

 arched and rather stubby, narrow in A. Wetherilli hardly 

 1 cm. long, few and racemose. Stems decumbent, opert, 

 airy and branched below. Leaflets rather many, linear to 

 narrowly elliptical (oval only in Wetherilli), 

 A3BC2DE. Pods a trifle obcompressed if at all flattened. Flow- 

 ers white, (rarely purplish) Californian species. Tro- 

 pical mostly. Macrcdontes. 

 Whole jilant softly-shaggy. 61 macrodon. 



Plants smooth or only ashy. 62 Douglasii. 



A3BC2D2E. Pods a little laterally flattened, about half-ovate. 

 r'ovvers f-^'A lacer^ose, ahct 7 mm. long, ascending in 

 bloom, purplish, rarely whitish. Peduncles with rachis 

 rarely longer than leaves, 1-2 dm. long. Upper leaf peti- 

 oles short or almost none. Leaflets long-petiolulate, 2-4 

 cm. lonq. Stems flexucus, from a thick or woody root 

 about 2 ft. long, spreading in tufts. Plants of the Navajo 

 Bafin and adjacent Colorado river drainage. Allochroi. 

 Stipe minute. 63 allochrous. 



Sitpe about as long as calyx. 64 Wetherilli. 



A3E2C. Pods balloon-shaped, larger above (sometimes obscurely 

 so), the cross section about round, little or somewhat oblique, 

 mostly only apiculate at tip, conspicuously inflated and papery, 

 tapering or contracted into a stipe at base (not tapering and 

 sessile in jejunus) about as long as calyx. Stipules connate at 

 least below. Leaflets linear (elliptical in Hookerianus) and 

 mostly acute. Pubescent plants but never woolly. Perennials 

 of the Lower and Middle, rarely Upper Temperate life zones. 

 A3B2CD. Pods nearly globose, sessile, about 1 cm. long. Stems 

 caespitose and very short. Flowers not over 7 mm. long 

 Leaflets revolute, sharp. Jejuni. 

 Plants densely matted and nearly acaulescent, smooth. 65 jejunus. 

 A3B2C2D. Pods 2-5 cm. long, tapering at base into a distinct 

 stipe as long as calyx but not jointed to it, sulcate ventrally 

 Flowers a little over 1 cm. long, mostly rather capitate, 6-10, 

 ascending. Banner large. Keel large, the base somewhat 

 arched, tip acute Fruiting calyx mostly reflexed, the tube 

 about 3 mm. long and teeth never over half the tube. Up- 

 per petioles short and leaf rachis long. Leaves rather ap- 

 pressed, the middle ones the largest. Internodes 2-7 cm. 

 long. Stems a half to 2 ft. long, tufted from rather woody 

 root. Hookeriani. 



Tall, erect, smooth, plants with phyllodia-like leaflets. 66 Cusickii. 

 Plants nearly prostrate, with silvery and rather 



broad leaflets. 67 Hookerianus- 



