104 LEGUMINOS^. 



retuse banner with a white spot; wings coherent at tip, inflated, exposing 

 the base of the broad short keel; this ciliate below the apex: pod rigid, 

 slightly falcate, 7 9-seeded. Very common, preferring rich low meadow 

 lands adjacent to the salt marshes; also occurring in a reduced form on 

 the low plains of the interior. 



3. L. trifldus, Torr. Slender, branched from the base, 610 in. 

 high, pilose-canescent: racemes short (13 whorls): upper calyx-lip 

 deeply cleft, segments divergent; lower broad, deeply trifid: corolla 2% 

 lines long, blue, the white spot on the banner permanent; keel deep, 

 scarcely falcate, shortly and obtusely pointed, and with a few stiffish 

 ciliolae above the middle. In sandy land, at San Francisco and Alameda- 



4. L. bicolor, Lindl. Low, often diffuse, stoutish, 610 in. high, 

 silky-pilose: leaflets 57, linear-spatulate, 1 in. long: upper calyx-lip 

 bifid; lower twice as long, entire: corolla 4 5 lines long, blue and white, 

 the white changing to red-purple; banner reflexed; keel falcate, acute, 

 ciliate toward the apex: pod small, about 5-seeded. Sandy soil about 

 San Francisco, in a slender depressed very hairy form; also on gravelly 

 crests' of the Oakland Hills, where it is stouter, with ascending branches. 



5. L. pachylobus, Greene. Stout, rigid, barely 1 ft. high, a few 

 ascending branches from the base, hirsute throughout: petioles slender 

 and long; leaflets 5 7, linear, % in long: racemes on stout peduncles, 

 whorls 24: fl. 3 lines long, subsessile, deep blue: calyx-lips broad, the 

 upper very short, notched; lower entire and twice as long: pod large, 

 (1% in long, 45 lines wide), very hirsute, 4 6-seeded. Contra Costa 



Co , and northward, in the Coast ranges. 



* 



6. L. mums, Dougl. Commonly 1 ft. often 2 ft. high, with many 

 decumbent branches, not succulent, minutely and not densely villous- 

 pubescent: leaflets oblanceolate, 1 in. long: racemes short-peduncled, 

 3 7 i n , long, of many rather indistinct whorls of large deep purple 

 fragrant flowers: upper calyx-lip deeply cleft; lower 3-dentate: corolla 

 g_ 7 u ne s long, the orbicular retuse banner closely reflexed, the white 

 middle part turning rose-red; wings lightly joined, forming an obliquely 

 obovate inflated sac; falcate keel with a long slightly ciliate beak. Com- 

 mon on plains, especially in sandy soil. 



7. L. carnosulus, Greene. Erect, 12 ft. high, usually simple, 

 stout and succulent; pubescence minute, appressed : leaflets oblanceolate, 

 1 in. long, obtuse, but with a small recurved mucronation: raceme loose, 

 distinctly verticillate: upper calyx-lip deeply cleft; lower entire: corolla 

 deep blue; keel villous in the middle. Valleys of the Coast Range. 



8. L. aftinis, Agardh. Very stout and succulent, irregularly branch- 

 ing, 1 2 ft. high, the pubescence very sparse and short; stipules small, 

 setaceous: leaflets 7, cuneate-obovate, obtuse or emarginate, 11% in- 



