AsTRAQALue. LEGUMINOSiE. 331 



ovato ; spikes peilunculate ; legumes secund, straight, acuminate at each end, 

 p^'iuiiiloiH. DC. prodr. 2. p. 2S7 ; Ilook. ft. Uor.-Am. l.p. 150. A. secua- 

 dus, Mich.r. ! f. 2. p. G6; Purt^h.f. 2. p. 473. 



Northern parts of Canadn, Michanj- ! l.wbrador, Colmaster (e\ Pursh). 

 Flowtrs pur{)le. Legume about i| of an inch long, clothed with blackish hairs, 

 somewhat stipitate, half 2-cellcd; cells 3-4-seeded. 



10. A. Missoiiri'nisis (Nutt.): whole plant clothed with a short white pu- 

 bescence; stem? numerous, in a spreading tuft; stipules ovate ; leaflets 5-10 

 pairs, elliptical and obovate-elliptical; peduncles a little longer than the 

 leaves; spikes capitate, few-flowered ; calyx pilose, with a mixiure of black- 

 ish hairs; teeth one-third the length of the cylindrical tube; bracts ovate, much 

 shorter than the calyx; legume oblong, somewhat compressed, hirsute when 

 voun?, but at lencth somewhat glabrous, coriaceous, the lower suture a little 

 introlTexed.— iV/(«. .' sren. 2. p. 9'J ; DC. prudr. 2. p. 287. Oxytropis argen- 

 taia, Piirsh^ fl. 2. p. 473 ; Ifichards. I. c. ? not of Pers. ? 



0. leaflets obovate-orbicular. 



On the Missouri. /?. In the Rocky Mountains, Nultall ! May.— Root long, 

 descending deeply. Stems 2-4 inches long. Leaflets 3-4 lines long, some- 

 times rather acute. Heads 9-12-flowered. large for the size of the plant, deep 

 violet or sometimes nearly white. Legume about an inch long, abruptly acu- 

 minate, not stipitate, many-seeded. 



11. A.argoplnjlhis (Nutt. mss.): "villous with long white silky hairs, 

 CJE5pit03e; stems short and decumbent; stipules lanceolate, acuminate, mem- 

 branaceous; leaflets 7-8 pairs, lanceolate-ovate and acute, or obovate and ob- 

 tuse; p.'duncles shorter than the leave?; racemes short, loose, som^nvhat cap- 

 itate, 3-S-Howered ; bracts long and subulate; flowers distinctly pedicellate; 

 calyx tubular ; teeth subulate, "about one-third the length of the tube; legume 

 hirsute, oblong, with abroad curv d point, transversely wrinkled, the lower 

 suture slightly introflexed. A. melanocarpus, P.ichards. app. Frankl. juurn. 

 e d. 2. p. 2S ? ; H'^iok. fl. Bor.-A>n. 1. p. 451 ?" 



Vallies of the Rocky Mountains, near the sources of the Platte, Nidtall ! 

 — Much more villous than the preceding species, and the flowers of a bright- 

 er purple. Wings much longer than the k-el. Legume nearly glabrous when 

 rip?. — This and the preceding species have t!ie lower suture of the legume so 

 little introflexed, that they might almost be referred to Phaca. 



12. A. Shortianus (^wn.m-^.): " stemless,cane?cent with appressed shin- 

 ing hairs; leaflets 5-7 pair-, roundish-elliptical or ovale, very obtuse ; stipules 

 ovate, obtuse; peduncles shorter than the leaves ; raceme or)long ; calyx 

 clothed with wuite hairs, with rather long subu:ate teeth ; legume large and 

 lurgil, cymbiform, with a short curved point, b at k and t an.=vcrstly wriukh d. 



'^Rocky Mountains, towards the plains of the Oregon.— Aimo-t entirely 

 silvery hite. L afl ts nearly as broad as long, twice as large as in the { re- 

 ceding spjcies, which it n.arly reserabL^s. Flowers ochroleucous ?" Nultall. 



t t L\::uaies ovute, tliick <md fleshy. 



13. A. caryocarpns (Ker): stems numerous, prostrate orassurgent, some- 

 what pub:'>cent with appressed hairs; stipules ovate, acute; L afltts 8-12 

 pairs, elUptical ; peduncles about the length of the leaves; ract me rather 

 loose, short ; bracts about twice the length of the pedicds ; calyx ihinly pi- 

 lose with daikish hairs, cylindrical-ol)loiig; l-^ume thi(k and fleshy, ovate, 

 rath?r acut:-, som<^what compressed, glabrous. — /i'er, 6o^ 7e^. ^ 176 ; DC. 

 prodr. 2. p. 2S1 ; Hook. fl. Bor.-Am. 1. p. 150. A. carnosus, Ant^ gen. 2. 

 p. lOD. A. sa",:al 'ntu \,' Richards, app. Frankl. jo urn. ed. 2. p. 29. Lindl. 

 bot.rex. t. 1324 (fide Hook.) 



Plains of the Missouri and Platte ; on the Saskatchawan, Drummond, &c. 



