LEGUMINOS^E. 91 



the broadly obovate banner erect: wings meeting above the keel, not 

 enfolding it: pod pubescent, straight, 7 10 lines long, 5 7 seeded. 

 Common throughout middle California, especially toward the seaboard. 



3. L. humistratus, Greene. Low and diffuse, the branches 58 in. 

 long, herbage soft-villous: fl. nearly sessile, yellow; calyx-teeth linear, 

 much longer than the tube: pod oblong. % in. long, pilose, 2 3-seeded. 

 Clayey banks and hillsides; as widely dispersed as the preceding, but 

 less common. May, June. 



4. L. denticulatus, Greene. Erect, 1 2^ ft. high, fastigiately 

 branching, pale green and glaucous, sparingly pilose; calyx-teeth longer 

 than the tube, and, with the margins of the upper leaves, somewhat den- 

 ticulate: corolla 2 lines long, pale yellow or salmon-color, changing to 

 red: pod pubescent, short, 3-seeded. A weed in grain fields of the 

 Sacramento. April June. 



H i Flowers 1 or many, on an elongated, usually bracted peduncle; claw 

 of the banner commonly remote from the others, keel mostly obtuse. 



+Annuals; few-flowered. 



5. L. micranthus, Benth. Erect, slender, 410 in. high, glabrous, 

 glaucous: peduncle filiform, bracted, 1-flowered: fl. minute, pale salmon, 

 turning red; pod 1 in. long or less, compressed, constricted between the 

 seeds, these oval or roundish, little compressed, smooth. April, May. 



6. L. salsnginosns, Greene. Ascending or depressed, slightly strigose, 

 somewhat succulent, the branches 8 18 in. long: leaflets 4 6, obovate, 

 obtuse: peduncles 1 in. long, 14 flowered, naked or with a conspicuous 

 1 3-foliolate bract: corolla yellow, 3 lines long, the banner and wings 

 equalling the straight keel: pod scarcely compressed, 10 12-seeded: 

 seeds obliquely oval, smooth. From San Jose southward, either toward 

 the sea, or on subsaline flats of the interior. March June. 



7. L. ru bell us (Nutt.), Greene. Prostrate, slender, not succulent, 

 strigose-pubescent or nearly glabrous: leaflets 6 10, linear-oblong, mostly 

 acutish: early peduncles shorter than the leaves, bractless, 1-flowered, 

 the later longer, bracted, 2-flowered: corolla reddish, scarcely twice as 

 long as the calyx: pod slender, straight, 7 10-seeded: seeds quadrate, 

 minutely granula'e. Plentiful in sandy soils, San Francisco, Alameda 

 and southward; apparently only along the seaboard. April July. 



8. L. iiu<Uflorus (Nutt.), Greene. Near the last, but leaflets smaller 

 and broader: fl. thrice as large: pod broader, more flattened, slightly 

 curved upward at apex: seeds larger, quadrate, faintly tuberculate. 

 Eastern base of Mt. Diablo Range, near Byron, etc., on gravelly hill-tops; 

 thence southward. March May. 



