220 Leguminosae 



villous or somewhat tomentose; leaflets 3-5, cuneate-obovate, 

 acute, 6-10 mm. long; umbel many-flowered, short-peduncled; 

 bract 1-foliate; calyx- tube 2 mm. long; the teeth slender, half 

 as long; pod strongly arcuate. 



Frequent in the San Bernardino and San Antonio Mountains in open pine 

 woods. v <- 



n- ** Annuals. 



18. Ij. Heermanni (D. & H.) Greene. Branches numerous, 

 flexuose, weak and prostrate, 3-10 dm. long ; pubescence spread- 

 ing and slightly tomentose ; leaflets 5-7, obovate or cuneate- 

 oblong, 4-8 mm. long; umbels on short peduncles or sessile; 

 flowers 4-5 mm. long ; calyx half as long, somewhat villous ; the 

 teeth filiform, about equaling the tube. 



Canyons of the San Gabriel and Santa Ana Mountains, below 4000 feet. 



9. PSORALEA L. 



Punctate with dots and heavy-scented perennial herbs 

 or rarely shrubby. Stipules free from the petiole. 

 Leaves pinnately 3-foliate or rarely palmately 3-5-foli- 

 ate. Calyx-lobes nearly equal, the upper often connate. 

 Keel united with the wings, broad and obtuse above. 

 Stamens diadelphous or monadelphous ; anthers all 

 alike. Pod ovate, indehiscent, 1-seeded. 



* Leaves pinnately 3-foliate. 

 *- Stems erect. 



1. P. xnacrostachya DC. Simple or more or lees branched, 

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

 tomentose; 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, com- 

 pressed, 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, 



