FABACEAE. 213 



6. Aragallus sericeus (Nutt.) Greene. (Oxytropis sericea Nutt.) On 

 hills and table-lands from N. D. and Wyo. to N. M. and Ariz. — Alt. 4000- 

 9000 ft. — Estes Park ; Sargents ; La Veta ; Cimarron ; Grayback mining 

 camps and Placer Gulch ; Platte Cafion ; Horsetooth Gulch ; Campton's 

 ranch ; west of Rist Caiion ; Wray ; Pinkham Creek. 



7. Aragallus monticola (A. Gray) Greene. (O. monticola A. Gray) On 

 mountain ridges from Sask. and Wash, to Colo. — " Colorado " ; e.xact locality 

 not given. 



8. Aragallus albiflonis A. Nels. In mountain valleys of Wyo. and Colo. 

 — Alt. 5000-11,000 ft.^Cucharas Valley, near La Veta; butte five miles 

 southvi'est of La Veta; Iron Mountain; Placer; Ft. Collins; Buena Vista; 

 Chambers' Lake ; west of Rist Cafion ; Palmer Lake ; Pennock's mountain 

 ranch ; Campton's ranch, North Poudre. 



9. Aragallus Kichardsonii (Hook.) Greene. {Oxytropis splendens 

 Richardsonii Hook.) In mountain valleys from Sask. and Yukon to Colo. 

 — Alt. 8000-10,000 ft. — North Park; Georgetown; Middle Park; Como, 

 South Park ; mountain near Veta Pass ; Twin Lakes ; Indian Creek Pass ; 

 Arkansas Junction, near Leadville; Eldora to Baltimore; Empire. 



28. GLYCYRRHIZA L. Wild Liquorice. 



I. Glycyrrhiza lepidota Nutt. Among bushes and in rich meadows from 

 Ont. and Wash, to N. Y. and Ariz. ; also in Mex. — Alt. 4000-8000 ft. — Colorado 

 Springs; Parlin, Gunnison Co.; Alamosa; Grand Junction; Huerfano Val- 

 ley, near Gardner; Arboles; Ft. Collins; Walcott; Pueblo; Denver; Poudre 

 Cafion ; Rist Canon ; near Boulder. 



29. AMORPHA L. False Indigo, Le.\d-pl.\nt. 



Tall shrub; leaflets 2-5 cm. long; pods usually 2-seeded. i. A. angustifolia. 



Low shrubs; leaflets 5-1.5 cm. long; pods i-seeded. 



Glabrous or nearly so ; spike usually solitary at the ends of the branches. 



2/ A. nana. 



Densely canescent ; spikes usually clustered. 3. A. canescens. 



1. Amorpha angustifolia (Pursh) Boynton. {A. fruticosa angustifolia 

 Pursh; A. fruticosa James; not L.) Along streams from S. D. and Mont, to 

 Fla. and Colo. — Alt. 4000-5000 ft. — Sterling, Logan Co. ; river flats and plains 

 east of Ft. Collins. 



2. Amorpha nana Nutt. {A. microphylla Pursh) On dry prairies from 

 Man. to Iowa and Colo. — Palmer Lake. 



3. Amorpha canescens Pursh. Sand-hills and prairies from Ind. and Man. 

 to La., Tex. and Colo. — Along Platte River. 



30. PSORALEA L. Pome Blanche, Indian Bread-root. 



Flowers small, less than 8 mm. long, in racemes or interrupted spikes ; root not 

 tuberous. 

 Flowers in racemes ; leaves not silvery. 



Racemes short and dense, elliptic or oblong; fruit globose, i. P. lanceolata. 

 Racemes lax, more elongated ; fruit ovoid. 2. P. tenuiflora. 



Flowers in interrupted spikes ; leaves silvery. 3. P. argophylla. 



Flowers large, over i cm. long, in dense head-like spikes ; plant with a deep-seated 

 tuberous, farinaceous root. 



