40 LEGUMINOS^. (pea FAMILY.) 



Villous; leaflets narrow, both sides pubescent. 



Bracts elongated; flowers rather large L. nanus. 9 



Bracts short; flowers small, narrow L. micranthus. 10 



Ovules several; bracts somewhat persistent; flowers scattered; petioles 1 to 4 times 

 the length of the leaflets. 



Slender; leaflets smooth above; bracts long. L. leptophyllus. 11 



Slender; leaflets linear; bracts short L. sparsiflorus. 12 



Stout; leaflets truncate; bracts short L. truncatus. 13 



Stouter; leaflets broad; bracts short; very hispid L. hirsutissimus. 14 



* * Perennials; herbaceous, tall; flowers large; ovules 8 to 12. 



Stout; long petioles; leaflets 10 to 16, very large L. polyphyllus. 4 



Stout; short petioles; leaflets 7 to 10, large L. rivularis. 5 



Slender, decumbent; short petioles; leaflets small L, littoralis. 6 



Stoutish, erect; short petioles; keel narrow, falcate L. albicaulis. 7 



« « ♦ 



Perennials; shrubby, leafy, silky-pubescent. 



Leaflets narrowly lanceolate; flowers yellow L. arboreus. 1 



Densely silky -pubescent; flowers blue to white L. Chamissonis. 2 



Pubescence short, tomentose; shrubby at the base L. DouglasiL 3 



1. L. arboreus, Sims. Often 4 to 8 ft. high; sulphur-yellow, fragrant flowers, ver- 

 ticillate in a loose raceme; pods large, pubescent, 10-12-seeded. 



2. L. Chamissonis. Esch. Less shrubby, 1 to 4 ft. high; leaflets 7 to 9, cuneate 

 obovate, a half to an inch long, very silky on both sides; bracts lanceolate, shorter than 

 the calyx; flowers sub-verticillate, blue, violftt, rarely white. A variety about San 

 Francisco with long bracts. 



3. L. Douglasii, Agardh. Slightly woody at base; pubescence short, tomentose or 

 silky; leaflets 7 to 9, oblanceolate to cuneate-oblong, 1 to 1^ inches long, pubescent on 

 both sides; bracts linear-setaceous, exceeding the calyx; flowers, blue or purple; calyx 

 with long setaceous bractlets. >* , 



4. L. polyphyllus, Lindl. Stout, erect, 2 to 5 ft. high, sparingly villous; stipules 

 larce, triangular to subulate; leaves distant, long petioled; leaflets 2 to 6 inches long; 

 racemes a foot or two long; flowers mostly scattered on long pedicels, blue, purple or 

 white; bracts oblanceolate, equaling or shorter than the calyx; keel naked. 



6. L. rivularis, Dougl. Stout, erect, 2 to 6 ft. high, nearly smooth; stipules subu- 

 late or setaceous; leaflets 7 to 10, about equaling the petioles, ^ to 5 inches long; raceme 

 often 1 tc 2 ft. long; bracts setaceous, exceeding the calyx; flowers purple or rarely 

 white; keel slightly ciliate. 



6. L. littoralis, Dougl. Stems slender decumbent or ascending, 1 or 2 ft. long; 

 leaflets a half to an inch long, at least half as long as the petioles; flowers blue or violet, 

 with some yellow, in short racemes; keel ciUate; calyx large, with small bractlets. 



