FABACEAE. 



197 



acutely beaked; stamens diadelphous. Style incurved. 

 Pod linear, compressed or nearly terete, dehiscent, 

 several-many-seeded. This American genus has been 

 combined by some authors with the old world genus 

 Lotus. 



Stipules scarious; perennials. 



Flowers whitish with purple marks; leaves 



thick, glaucous. 1. H, crassifolia. 



Flowers yellow; leaves thin, appressed- 

 pubescent. 

 Leaflets 7-11; flowers 5-7, 15 mm. long. 2. H. oUongifolia. 

 Leaflets 5-7; flowers 1-3, 10 mm. long. 3. H. lathyroides. 

 Stipules gland-like; annuals except grandiflora. 



Leaflets 1-3, on a terete rachis. 4. H. americana. 



Leaflets more than 3, on a dilated rachis. 

 Flowers solitary in the axils, bractless. 



Catyx-teeth equaling the tube. 5. H. wrangeliana. 



Calyx-teeth much longer than the 



tube. _ _ 6. H. brachycarpa. 



Flowers terminating few-many-flowered 

 peduncles, usually bracted. 

 Annuals. 



Pods constricted between the 



seeds; keel acute, sharply 



curved. ^ 7. H. parviflora. 



Pods not constricted ; keel obtuse, 



scarcely or not at all curved. 



Peduncles 2-5-flowered; seeds 



smooth and shining. 8. H. mariiima. 



Peduncles 1-2-flowered; seeds 

 quadrate, minutely tu- 

 berculate. 

 Pubescence more or less 

 appressed. 

 Flowers 9-12 mm. long. 9. H. strigosa. 

 Flowers 4-5 mm. long, 10. H. rubella. 

 Pubescence spreading and 



more dense. 11. iiZ". nudiflora. 



Perennial; flowers capitate, 15 mm. 



long or more. 12. H. grandiflora. 



1. H. crassifolia Benth. Erect, stout, usually simple below, 

 5-10 dm. high; branches few, often flexuous; leaves 10 cm. long or 

 more, the leaflets rhomboidal, 18-24 mm. long, thick, on short 

 stalks; stipules scarious, ovate or rounded; peduncles shorter than 

 the leaves, bracted above the middle with a 3-foliolate petioled leaf; 

 umbel 7-12-flowered; calyx 5 mm. long, on slender pedicels, the 

 teeth very short, acute; corolla greenish yellow or whitish with 

 purple spots, twice as long as the calyx; pods terete, 5-6 cm, long, 

 4-6 mm. thick, 7-12-seeded; seeds about 4 mm. long. 



Open coniferous forests in dry situations, San Gabriel, and San 

 Bernardino Mountains. 



