104 LEGUMINOSiE. 



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. triiidus, Torr. Slender, branched from the base, 6 — 10 in. 

 high, pilose-canescent: racemes short (1 — 3 whorls): upper calyx-lip 

 deeply cleft, segments divergent; lower broad, deeply trifid: corolla 1% 

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

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

 ciliolse above the middle. — In sandy land, at San Francisco and Alameda. 



4. L. tricolor, Lindl. Low, often diffuse, stoutish, 6 — 10 in. high, 

 silky-pilose: leaflets 5 — 7, 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 %—4: fl. 3 lines long, subsessile, deep blue: calyx-lips broad, the 

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

 (1J4 in long, 4 — 5 lines wide), very hirsute, 4 — 6-seeded. — Contra Costa 

 Co , and northward, in the Coast ranges. 



6. L. nanus, 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 in. long, of many rather indistinct whorls of large deep purple 

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

 6 — 7 lines 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, 1—2 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 verticillale: upper calyx-lip deeply cleft; lower entire: corolla 

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



8. L. affinis, 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, 1 — 1% in. 



