314 



LEG UMINOS^E. 



inonadelphous, dimorphous, 5 with longer and basifixed anthers, the 

 alternate 5 with shorter and versatile ones. Pod somewhat flattened, 

 often constricted between the seeds. Cotyledons thick and fleshy. 

 (Latin lupus a wolf, these plants thought to rob the soil of its 

 fertility.) 



A. Pods linear or oblong. 



Bracts deciduous; ovules several ; cotyledons of the seedling petioled. 

 Low shrubs or at least suffrutescent, silky pubescent; petioles mostly 

 short. 



Flowers sulphur-yellow ; raceme often 1 ft. long. . . . 1. L. arboreus. 

 Flowers not yellow, mostly blue. 



Herbage greenish; flowers blue or white; keel ciliate for its whole 

 length ; low, the stems merely suffrutescent. . . 2. L. variicolor. 



Herbage silky. 



Flowers bluish or lavender, the banner with a yellow spot; keel 



glabrous; no distinct trunk *3. L. Chamissonis. 



Flowers blue; keel ciliate; shrub with a distinct trunk 



4. L. albifrons. 



Perennial herbs. 

 Leaflets 5 to 7, more or less ciliate or ciliolate. 

 Herbage canescently silky. 

 Leaflets oblanceolate or cuneate-oblong; roots large, yellow; seashore 



species 5. L. littoralis. 



Leaflets spatulate-oblong; root not yellow; montane species 



6. L. sericatus. 



Herbage greenish, comparatively glabrous; montane or of the hills . . 



7. L. latifolius. 



Leaflets 7 to 9, linear-lanceolate, 1 to \% in. long; keel glabrous; plants 

 mostly decumbent, with silky herbage 8. L. formosus. 



Leaflets 9 to 16, lanceolate or oblanceolate, 3 to 6 in. long; petioles % ft. 



long or more; plants erect, 3 to 5 ft. high, sparingly villous 



9. L. polyph yllus. 



Annual herbs. 



Flowers mostly 4 to 7 lines long; upper calyx-lip cleft or bifid. 

 Lower calyx-lip 3-toothed or entire; leaflets cuneate-obovate, obtuse or 



emarginate; plants very stout and succulent. .10. L. ajjinis. 

 Lower calyx-lip 3-dentate; leaflets oblanceolate, acute, plant slender, 



not succulent : 11. L. nanus. 



Flowers mostly iy 2 to 3 lines long. 

 Slender plants; upper calyx-lip with divergent lobes. 



Lower calyx-lip long, entire 12. L. micranthus. 



Lower calyx-lip deeply 3-cleft 13. L. trifidus. 



Stoutish plants; upper calyx-lip bifid, the ovate segments short and 



parallel; lower calyx-lip entire or slightly dentate 



14. L. poli/carpus. 



B. Pods short and roundish or ovate. 



Bracts persistent; ovules 2; cotyledons of the seedling broad and united by 

 their bases; annuals. 

 Upper lip of calyx herbaceous and entire; flowers pale yellow; stems 



simple below, widely branching above 15. L. luteolus. 



Upper hp of calyx more or less scarious, emarginate or cleft. 

 Flowers commonly white or yellow; stem simple below, branching at 



the middle 16. L. dtnsiflorus. 



Flowers light purple or flesh-color ; stem commonly simple 



17. L. microcarpus. 



1. L. arboreus Sims. Distinctly arborescent and 4 to 8 ft. high 

 or lower and merely suftrutescent; lightly pubescent on the young 

 stems and lower surface of the leaves; leaflets oblanceolate, 1 to 2£ in. 

 long, 9 to 11 on the first leaves, 6 to 8 on the (later) leaves from the 



