132 . FAB ACE AE 



Leaflets permanently pubescent above. 



Pubescence of the stem of one kind, usually short, except in L. comatus. 



XII. Ctanei. 

 Pubescence of the stem of two kinds, viz., a short and dense under-pubes- 

 cence and scattered long silky hairs. XIII. Leucophtlli. 



Plant low, less than 3 dm. high, densely cespitose. 

 Inflorescence much exceeding the leaves. 



Leaves mostly basal ; petioles many times longer than the leaflets. 



XIV. Lepidi. 

 Leaves mostly cauline; petioles of the caullne leaves only slightly, if at all, 

 exceeding the leaflets in length. » 

 Leaves densely canescent. XV. Candtcantes. 



Leaves green. XVI. MONTICOLAE. 



Inflorescence not exceeding the leaves. XVII. Caespitosi. 



Annuals. 



Cotyledons after germination petloled ; pods 3-4-seeded. XVIII. Concinni. 



Cotyledons after germination sessile, persistent, clasping the stem; pod 2-seeded. 



XIX. PUSILLI. 



I. PlATTENSBS. 



One species. 1. L. plattensis. 



II. Parviflori. 



Calyx spurred or saccate at the base, appressed-silky; banner pubescent on the back: 

 keel cillate. 

 Leaflets oblanceolate, flat; racemes comparatively dense; flowers numerous, sub- 

 verticillate. 2. L. pseudoparviflorus. 



Leaflets linear, conduplicate; flowers scattered in a lax raceme. 



3. L. stenophyllus. 

 Calyx somewhat gibbous at the base, but not produced backwards into a spur or sack. 

 Inflorescence, pedicels, and calyces finely white-silky with .strictly appressed hairs. 

 Flowers 15 mm. long; corolla white. 4. L. leucanthus. 



Flowers 12 mm. long or less ; corolla purple or blue. 



Banner somewhat silky on the b2tck: lower lip of the calyx twice as long as 



the upper; keel ciUate on the margins. 5. L. Scheuberae. 



Banner glabrous ; keel not cillate. 



Lower lip of the calyx only slightly longer than the upper; flowers about 



10 mm. long; plant green. 6. L. lazispicus. 



Lower Up of the calyx much longer than the upper; corolla about 8 mm. 

 long; plant silvery. 7. L. tenellus. 



Inflorescence, pedicels, and calyces more loosely pubescent ; hairs at least in age spread- 

 ing. 

 Flowers middle-sized, 8-12 mm. long. 



Banner pubescent on the back; plant silvery. 8. L. argenteus. 



Banner glabrous; plant green. 



Calyx strongly gibbous at the base; keel glabrous; stem purplish. 



9. L. rubricaulis. 

 Caljjc not strongly gibbous; stem green. 



Banner blue or purplish, not dark-spotted. 



Lower lip of the calyx about twice as long as the upper; leaves 



broadly oblanceolate. 10. L. spathutatus. 



Lower Up of the calyx only sUghtly longer than the upper; leaflets 

 narrowly oblanceolate. 11. L. alpestris. 



Banner Ught blue with a dark spot. 12. L. maculalus. 



Flowers about 6 mm. long. 



Leaflets narrowly oblanceolate. 



I jps of the calyx acutely 2- and 3-toothed. 13. L. floribundus. 



Lips of the calyx obtuse, merely retuse. 14. L. leptostachyus. 



Leaflets broadly oblanceolate. 15. L. parvifiorus. 



III. Calcarati. 



One species 16. L. calcaratus. 



IV. Argophtlli. 



Lower Up of the calyx about half longer than the upper; leaflets Unear-oblanceolate. 

 Petals and calyx-lobes narrow; wings fully twice as long as broad; lower Up of calyx 



narrowlylanceolate;plantgreener: inflorescencelax. 17. L. laziflorus. 



Petals and calyx-lobes broad; lower Up of the calyx broadly lanceolate; plant silvery 

 white; inflorescence dense. 18. L. aduncus. 



Lower Up of the calyx about twice as long as the upper; leaflets broadly lanceolate. 

 Leaflets equaUy silvery white on both sides, usuaUy condupUcate; their backs usually 



curved. 19. L. argentinus. 



Leaflets grayish canescent, greener above, flat. 20. L,. lupinus. 



V. SUIJPHtrREI. 



Flowers 12-14 mm. long; upper lip of calyx about 8 mm. long. 21. L. flavescens. 

 Flowers 1 cm. long or less; upper Up of calyx very short, only 4 mm. long. 



Inflorescence loosely pubescent; flowers about 10 mm. long. 22. /.,. sulphureus 



Inflorescence flnely appressed-silky; flowers about 8 mm. long. 



23. L. lucidulus. 



VI. AlBICAUtES. 



One species. 24. L. albicaulis. 



