PEA FAjMILY. 289 



Leaves equally pinnate, the rachis produced Into a branched tendril, 

 rarely terminating in a bristle or imperfect leaflet. 

 Style hairy all around at summit . . . 8. ViciA. 



Style hairy on the upper side 9. Lathybi'S. 



Leaves equally or unequally pinnate, the leaflets commonly 3 to many, 

 sometimes 1 or 2; iiowerp in umbels, sometimes solitary ... 



10. Lotus. 

 Leaves 3-foliolate. 



Flowers in a head or head-like inflorescence, rarely in a capitate 

 umbel or short spike; corolla withering-persistent after fl^ower- 

 ing; leaves palmately 3, sometimes 4 or 5-foliolate 



11. TEIFOLrOM. 



Flowers in a raceme or spike; corolla deciduous after flowering; 

 leaves pinnately 3-toliolate. 



Pod small, globose; style filiform 12. Melilotus. 



Pod curved or spirally coiled; style subulate. . .13. Medicago. 

 Calyx deeply bilabiate; stamens 5 long and 5 short, their filaments 

 monadelphous but free at apex; flowers racemose, mostly in whorls; 

 leaves palmate, of 4 to many leaflets . . 14. Luporus. 



1. CERCIS L. Judas Tree. 



Shrubs. Flowers red-purple, in umbel-like fascicles, appearing 

 from winter buds in advance of the simple leaves. Stipules caducous. 

 Calyx in anthesis broader than long, with 5 broad obtuse teeth. 

 Corolla obscurely papilionaceous; banner smaller than the wings and 

 enclosed by them in the bud; keel-petals larger than the wing-petals 

 and not united. Stamens 10, distinct, declined, the filaments clavate- 

 dilated towards the base. Pod oblong, very flat, the upper suture 

 with a winged margin. Embryo straight. 



1. C. occidentalis Torr. Western Eed-bud. Eight to 10 ft. 

 high, the branches rather widely spreading; leaves round, cordate at 

 base with nearly closed sinus, 2J to 3J in. broad; pods about 2 in. 

 long and 8 lines wide. 



Foothills of the Sierra Nevada and inner Coast Kanges. Mar.-Apr. 



2. THERM OPS IS B. Br. False Lupixe. 



Perennial herbs with commonly erect clustered stems. Leaves 

 palmately 3-foliolate, petioled, and with free leaf-like stipules. 

 Flowers yellow, in a terminal raceme, the pedicels subtended by 

 persistent bracts. Calyx campanulate, deeply toothed, the two upper 

 teeth in ours almost completely united. Banner roundish, shorter 

 than the oblong wings, the sides reflexed; keel nearly straight, obtuse, 

 its petals very lightly joined, equaling the wings. Stamens distinct. 

 Pod long, linear, flat, several-seeded. (Greek thermos, lupine, and 

 opsis, resemblance.) 



1. T. macrophylla H. & A. Stems somewhat branched above, 1 

 to 2 ft. high; leaves silky or whitish-pubescent when young, soon 

 glabrate, at least above; leaflets broadly or narrowly obovate and 

 often more or less rhomboidal, acute at each end, or some obtuse 

 above (even on the same plant), IJ to 3 or 4 in. long; stipules strongly 

 oblique or not at all oblique, even on the same plant, longer than the 

 petioles; upper lip of calyx slightly notched; lower calyx-teeth 

 shorter than or as long as tube; raceme rather dense, 3 to 6 in. long; 

 pod straight, silky, 2 to 5-seeded.— (T. Californica Wats.) 



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