100 DIADELPHIA. DECANDRIA. 



and pubescent; vexillum ovate, nearly straight; legume 

 oblong, ai first pubescent. 



9. * cfumosus. Caulescent, decumbent and pubescent; 

 leaflets (8 to lUpa!r,)oblong-lancfcolate; stipules ovate; ra- 

 cemes axillary, about ihe length of tlie leaves; legumes 

 large and pendulous, oval, carnose, infiatedand compress- 

 ed, smooth. 1\ab: On the plains of tfie .Missouri from 

 the confluence of the river Platte to the Mountains; the 

 legumes are about the size of ordinary ])lums, and consi- 

 derably resemble, as to form, those of . ?. physcdef. Flovk'ers 

 violet-purple; bractes much shorter than the calii; calix 

 covered with a dark pubescence, segments noi subulate; 

 vexillum ovate, long and erect, fruiting racemes prostrate. 

 The plant described for the present by Mr. I'ursh in 

 Suppl. 2. p 740. was a species of Sophora to which he by 

 Hiistake applied tlie fruit of our A. carnosvs. 



10. gcJfc^-oides. Stem partly erect; leaflets oblong-lan- 

 ceolate (about 21), somewhat pubescent Ijeneath; pedun- 

 cles axillai}-, loni.'er than the leaves; spike crowded, flow* 

 ers pedicellate, secund; legumes stipitate, pendulous, bi- 

 ventricosely triquetrous and smooth; calix pubescent, 

 segments subulate, Hab. On saline alluvial soils, from 

 White river to the Mountains; common, Ors. About two 



ieet high and nearly smooth; the Mholc plant rathev 

 strongly and somewhat disagreeably scented, flowers 

 whitish, numerous, bractes subulate, longer than the pe- 

 dicells; fruiting raceme 8 to 10 inches long; legume 10 to 

 15 hues, conspicuously stipitate. A' racevAfMsuc. Ph. iu 

 Suppl. 2. p. 740. 



11. * gracilis. Fras. Catal. 1813. Pubescent, stem slen- 

 der and erect; leaves subsessile, leaflets oblong-linear, re- 

 mote (13 to 21,) racemes pedunculate, longer than the 

 leaves; legumes very short, cernuous, elliptic-ovate, sub- 

 triquetrous and pubescent, 1-celled, dentures of the calix 

 minute. Hab, From White river to the Mountains, on 

 the plains of the Missouri. Flowering in May. Nearly 

 allied to A. sidcatns, but pubescent. It appears to be A. 

 tenellus of Pursh and also Ervum muUifiorinn, Suppl 2. p. 

 739. It is likewise JJalea parvifora, Ph. 2. p. 474. as I 

 have examined the specimen so marked in Herb. Lambert. 

 Obs. Stem about 2 feet high, angular, but scarcely stri- 

 ate. Stl[)ules ovate, acuminate. Peduncles very long; 

 racemes loose, substcund; calix villous; legume about 

 2 lines h»ng, many-seeded, acuminated with the curved 

 style. Flowers pale purple. 



This vast genus of near 180 species exists principally 

 in Siberia; there are a few species also in Europe and the 



