LEGUMINOS^E. 107 



17. L. Chaniissoiiis, Esch. Commonly 3 ft. high, but never arbor- 

 escent; the suffrutescent branches forming a more or less dense tuft and 

 leafy throughout: the petioles short; raceme elongated and dense, but 

 scarcely peduncled: fl. not very distinctly whorled, of a lavender shade; 

 banner with a permanent yellowish spot. Apparently confined to the 

 sand dunes of the San Francisco peninsula and Point Reyes. April 

 July 



18. L. variicolor, Steud. Woody basal branches short, slender, very 

 tough, the decumbent, or often assurgent annual ones very leafy, 1 ft. 

 long or less : pubescence of the leaves scanty, appressed, the stems often 

 sparingly hirsute: leaflets 7 9, narrow, acute: raceme short, the whorls 

 often 3, 2 or 1 only: fl. large; banner white or pale blue; wings blue; 

 keel ciliale throughout its length: pods large. Frequent on grassy north- 

 ward slopes at the Presidio, San Francisco, and southward. 



19. L. arboreus, Sims. From arborescent and 610 ft. high to 

 suffrutescent and bushy; slightly silky-pubescent: leaflets about 9, nar- 

 rowly lanceolate, % 1% in. long, acute, glabrate above: raceme often 

 1 fl. long; fl. whorled, sulphur-yellow; keelciliate: pod 2 3 in. long, 

 8 12-seeded: seed oblong, dark. Very common among the sand-hills, 

 or in sandy soil, mostly near the sea or along the shores of the Bay. 



20. L. propinquns, Greene. Near the last, but small and more 

 bushy, usually 24 ft. high, puberulent, except the glabrous upper face 

 of the leaflets: racemes short and shorl-peduncled, the bracts squarrose, 

 very caducous: petals violet, the banner reddening in age; keel strongly 

 ciliate: pods and seed nearly as in the preceding. A seaboard species of 

 wide range north and south. Point Reyes, etc. 



* * Pods 2-seeded; cotyledons connate. Annuals with whorled flowers 

 and persistent bracts. 



21. L. microcarpns, Sims. Branched from the base, or near it, 1 ft. 

 high or less, somewhat succulent, villous throughout: leaflets 9, cuneate- 

 oblong, 1 in. long or more: racemes short-peduncled: bracts subulate- 

 setaceous, equalling the calyx or shorter: fl. short-pedicelled, purplish 

 or flesh-color: calyx densely hirsute; upper lip short, subscarious, enaar- 

 ginate or cleft; lower obscurely 2 3-toothed. Throughout the State, 

 apparently in the interior only. 



22. L. densiflorus, Benth. Stem stout, simple below, parted in the 

 middle into numerous wide -spread branches, 2 ft. high, succulent, sparsely 

 villous: racemes 6 10 in. long, long-peduncled: bracts setaceous from 

 abroad base: fl. white or rose-color, the banner greenish-dotted: calyx 

 sparingly villous: upper lip scarious, deeply cleft: lower long, toothed. 

 Very common, both on the seaboard and plains of the interior. A 



