LEGUMINOS^. (^PULSE FAMILY.; ^9 



* * Sujl down;i or silkij-villuus all over: leaflets I.J to 17; spikes cijlindrical. 



4. P. villosus, Nutt. Leaflets liuear or oblou^ : spikes I to 5 inchei) long, 

 short-peduncloil ; luruUu rose-colur. — Aloug the Upper Missouri ami Miaaiit- 

 sippi to N. Wiscousiii. 



9. AMORPHA, L. False Indioo. Li.au Plant. 



Standard erect, folded together. — The llowers jjurplu or violet, small, iu 

 dense clustered terminal spikes. 



* Pods l-secded: leaflets small, crowded. 



1. A. CaneSCens, Nutt. Whitened with hoarn down, 1 to ^ feet hit/h : 

 leaflets 1') to •!') |(.iirs, elliptical, smoothish above with age. — From liritish 

 America to Texa.s and from Colorado to Indiana. 



2. A. microphylla, Pur.sh. Very low, nearhi i/lnhmus : leaflets .-ome. 

 what ovate-ellii)tical, risjjid : spikes solitary and aggregated. — Along the 

 Platte to the mountains and northward to tiie plains of the Ued liivcr. 



* * Pods 2-seeded : leaflets scattered. 



3. A. fruticosa, L. Rather pubescent or smoothish: leaflets 8 to 12 

 pairs, oval. — Along rivers from Colorado northeastward to British America 

 and eastward to Pennsylvania and Florida. 



10. PETERIA, Gray. 



Calyx tubular at base, gibbous above. Standard open at the apex, witli 

 reflexed sides, narrowed into a long claw. Ovary stipitate. 



1. P. SCOparia, Gray. liigid, branching, glabrous; leaflets numerous, 

 very small, entire; stij)ulcs small, subulate: flowers scattered, yellowish. — 

 PL Wright, i. 50. S. W. Colorado and southward. 



11. ROBINIA, L. Locust. 



Calyx slightly 2-lipped. Standard large and rounded, turned l^ack. — Tree.s 

 or shrubs, often with prickly sj»ines for stipules : flowers showy, in hangini; 

 axillary racemes. Base of the leaf-stalks covering the buds of the next year. 



I. R. Neo-Mexicana, (iray. Shrub 4 to feet high : stipular itrickle."* 

 subrecurved, sharp and stout : leaflets elliptiial or oblong : peduncles and th«- 

 short crowded racemes hispid with straight glanduliferous hairs: calyx tinely 

 hispid: corolla rose-color: pods glandular-hispid. — S. ( 'oK)rado and soulh 

 ward. 



12. GLYCYRRHIZA, L. LKaouK .:. 



Flowers nearly as in Aslratjalns. Ovary sessile : style short ami rigid. PcmI 

 compressed, and often curved. — Erect perennial herbs : flowers in {\i'usv 

 axillary pedunculate spikes, with caduious l)racts : n»ot larijo and sweet. 



1. G. lepidota, Pursh. Somewhat glandular-jiuberulent, or the younger 

 leaves slightly silky: leaflets 6 to 8 pairs, oldong lanceolate : spike .<«hort : 

 flowers ocbroleucous : ])od thickly l)eset with hooked prickh's. — From C<'lo 

 rado to New Mexico, westward into Nevada and X. California, and northward 

 to Washington, and across the continent to Hudson Bay. 



