216 Leguminosae 



obovate or oblong ; keel slightly incurved, obtuse or 

 acutely beaked ; stamens diadelphous. Style incurved. 

 Pod linear, compressed or nearly terete, straight or 

 arcuate, dehiscent or indehiscent, 1-many-seeded. (Ho- 

 sackia.) 



* Stipules not gland-like; perennials. 



1. "L. oblongifolius (Benth.) Greene. Erect, slender, 3-4 dm. 

 high, somewhat appressed-pubescent ; leaflets 7-11, narrowly 

 oblong or oblanceolate, 2.5-3 cm. long, acute; stipules small, 

 acute ; peduncles exceeding the leaves, 5-7-flowered ; bract sub- 

 sessile, 1-3-foliate; flowers 15 mm. long; calyx-teeth subulate, 

 nearly equaling the tube; corolla yellow, turning purplish or 

 brownish ; pod slender, 5 cm. long. 



Occasional along mountain streams. 



2. It. lathyroides (D. & H.) Greene. Slender, branching and 

 somewhat flexuose, 2.5-4 dm. high, minutely pubescent; leaflets 

 5-7, linear-lanceolate, acute at both ends; stipules triangular, 

 2 mm. long, scarious, ovate-acuminate; umbels 1-3-flowered, 

 with or without a linear-lanceolate bract; flowers 10 mm. long; 

 calyx-teeth linear, acute; pod as in the last. 



Along streams near Los Angeles and in San Gabriel Canyon. 



** Stipules gland-like. 



*- Pod straight or nearly so, dehiscent. 



* Leaflets 1-3, on a linear rachis. 



3. L. Americanus (Nutt.) Bisch. Annual; erect or decum- 

 bent, 2-6 dm. high, more or less villous ; leaflets 1-3 or rarely 5, 

 ovate to oblong, acutish, 12-15 mm. long; peduncles slender, 

 exceeding the leaves; bracts 6-12 mm. long; flowers solitary, 

 salmon-colored or often whitish ; calyx-tube short ; the teeth 

 linear, equaling the corolla; pod 2-3 cm. long; seeds oblong, 

 smooth, dark- colored. (H. Purshiana Benth.) 



Frequent in the foothills and mountains. June-September. 



** ** Leaflets more than 3, on a dilated rachis. 



= Flowers solitary; bracts wanting; standard approximate. 



4'. !. Wrangelianus F. & M. Annual; much branched, de- 

 cumbent or ascending, 1-3 dm. long; sparsely or canescently 



