202 FABACEAE. 



Leaves pinnatcly 3-foliolate. 

 Stems erect. 



Peduncles much exceeding the leaves. 1. P. macrostachya. 



Peduncles about equaling the leaves. 2. P. physodes. 



Stems prostrate. 3. P. orbicularis. 



Leaves palmately 5-foliolate. 4. P. californica. 



1. P. macrostachya DC. Simple or more or less branched, 

 1-4 m. high, nearly glabrous, puberulent or often somewhat tomen- 

 tose; stipules small, lanceolate; leaflets ovate-lanceolate, 3-5 cm. 

 long; peduncles much exceeding the leaves; spikes cylindric, silky- 

 villous; bracts broad, acuminate, equaling the flowers; lower calyx- 

 tooth longest, about equaling the corolla; tenth stamen nearly free; 

 pod villous, ovate-oblong, acute, compressed, 6-8 mm. long. 



Along streams in the foothills and in the valleys. June-August. 



2. P. physodes Dougl. Slender, erect, 3-6 dm. high, nearly 

 glabrous; stipules linear-lanceolate; leaflets ovate, acute, 2-3 cm. 

 long; peduncles about equaling the leaves; racemes short, dense; 

 bracts small; calyx with sessile glands and somewhat villous with 

 black hairs, becoming enlarged and inflated in fruit; teeth short, 

 nearly equal; corolla 1 cm, long, twice as long as the calyx, ochro- 

 leucous, often with a deep purple tinge; stamens monadelphous; pod 

 rounded, compressed, 6 mm. long. 



Frequent in the upper chaparral belt throughout our range. 



3. P. orbicularis Lindl. Stem prostrate, creeping, the leaves 

 and racemes erect, long stalked; leaflets 2.5-4 cm. long, the terminal 

 one nearly orbicular, the lateral pair obovate; raceme often 2 dm. 

 long; bracts large, deciduous; calyx villous and pedicellate-glandular, 

 cleft nearly to the base, the lower tooth equaling the purplish corolla; 

 stamens diadelphous; pod ovate, acute, 6 mm. long. 



Occasional in the valleys throughout our range; rare in the coast 

 region. 



4. P. californica Wats. Low, tufted; pubescence short, silky, 

 appressed; stipules scarious, lanceolate, deciduous; leaflets broadly 

 lanceolate, acutish, 2-4 cm. long; peduncles short; racemes rather 

 loose, shorter than the leaves; pedicels slender; calyx silky-villous, 

 1 cm. long; the lobes linear, acuminate, slightly surpassing the 

 corolla; pod thin, villous, oblong, with a lanceolate beak. 



San Bernardino Mountains in the chaparral belt. 



10. AMORPHA L. 



Glandular-punctate and heavy-scented shrubs with 

 unequally pinnate leaves, caducous stipules, and small 

 purple flowers in terminal spikes. Calyx obconic-cam- 

 panulate, 5-toothed, persistent. Standard erect, con- 

 cave, unguiculate; wings and keel wanting. Stamens 

 monadelphous at the base. Pod short, exceeding the 

 calyx, sessile, indehiscent, 1-2-seeded. 



