OF ARTS AND SCIENCES: NOVEMBER 11, 1863. 197 



pliiriovulatis. — Caulescentes e radice perenni, cinereo-pilosuli vel 

 glabelli, adsurgentes vel decumbentes. Stipulfe adversus folium 

 pi. m. coadunataj. Spicre seu capitula densiflorjE. Flores raedio- 

 cx'es, sajpissime violacei seu purpureas, semper leguminaqne ad- 

 scendentes vel arrecti. 



13. A. ADSURGENS, Pall. Astrag. t. 31. A. Laxmanni, Jacq. Hort. 

 Vind. 3, t. 37 ; Pall. Astrag. t. 30 : forma pallidiflora. A. striatus, 

 Nutt. in Torr. & Gray, Fl. 1, p. 330. Spithama^us ad sesquipedalem, 

 pube adpi'essa minuta subcinereus, vel glabratus viridis ; caulibus sub- 

 validis ; stipulis scariosis basi plerumque concretis ; spica demum ob- 

 longa vel cylindracea ; leguminibus ovato-oblongis baud stipitatis, pube 

 brevi adpressa. — Plains of Nebraska to the interior of Oregon and 

 throughout the Saskatchawan region. (Also Siberia.) The Russian 

 botanists recognize a white-haired as well as dark-haired calyx in A. 

 adsurgens. A white-haired form, with a rather shorter calyx-tube, a 

 very dense spike, and more nearly erect and rigid stems, which 

 abounds- on the plains of Nebraska, is Hooker's var. robustior (A. 

 nitidus, Dougl. ined.), and is A. striatus, Nutt., or rather Nuttall's 

 specimens are intermediate between this and the laxer form, with 

 longer and partly dark-haired calyx : this particularly well accords 

 with Pallas's original figure and description. 



14. A. HYPOGLOTTis, L. ; DC. Astrag. t. 14. A. arenarius, Pall. 

 Astrag. t. 34. A. dasyghttis, Fisch. A. goniatus, Nutt. in Torr. & 

 Gray, Fl. Humilis, gracilior, diffuso-procumbens, pube laxiore ; stipu- 

 lis subfoliaceis concretis ; capitulo plurifloro ; leguminibus ovato-trigonis 

 albo-villosis brevissime stipitatis oligo-(2 -8-)spermis. — Upper plains 

 of Nebraska, Rocky Mountains, and northward. (Siberia, Europe.) 



§ 7. Rejlexi. Legumen crasso-coriaceum, estipitatum, ovato-trigonum, 

 postice profundissime sulcatum (sulco angusto marginibus rugulo- 

 sis), bilocellatum, sectione trans versali obcordato-biloba, locellis 

 3 _ 4-ovulatis. Carina corollas falcata, sursum attenuata, vexillura 

 angustum subcequans, alas sublonge superans ! — Caules graciles 

 e radice annua, piloso-pubescentes ; foliolis emarginatis. Flores 

 parvi, brevissime pedicellati, pauciusculi, subcapitati, albo-violacei, 

 patentes : legumina deflexa. 



15. A. REFLEXUS, Torr. & Gray, Fl. 1, p. 334. — Texas. Known 

 only from Drummond's specimens, Buckley's A. Brazoensis, which I 

 had too hastily referred here, being diiFerent. Flowers scarcely 3 lines 



19* 



