OF ARTS AND SCIENCES: NOVEMBER 11, 1863. 227 



Gray in coll. Hall & Harbour, no. 115. Subglaber ; caiilibus adsur- 

 gentibus vel difFusis (sub- vel sesqui-pedalibus) ramosis ; stipulis superi- 

 oribus basi tantura connatis ; foliolis 6- 10-jugis angusto-oblongis linea- 

 ribusque obtusis nunc mucronatis ; racemis brevi-pedunculatis plurifloris 

 laxis ; floribus flavido-albis, carina rectiuscula alls breviore obtusissima 

 apice nunc purpureo tincta ; legumine oblongo piano glabro chartaceo 

 (circiter semipollicari) stipite calycem subtequante rarius superante suf- 

 fulo. — Plains of Nebraska to Mackenzie River (lat. G5°) and the 

 Rocky Mountains. — The earliest specific name is fortunately not 

 preoccupied in Astragalus, and may be adopted. It is only in 

 Nicollet's specimens that I have seen the stipe much exceeding the 

 calyx, — in these fully twice its length ; but there is no clear dis- 

 tinction, either by the leaflets or the legumes, between Nuttall's two 

 supposed species. 



95 ? A. BouRGOVii, sp. nov. Striguloso-pubescens ; caulibus e 

 caudice lignescente adsurgentibus (spitham^is) ; stipulis fere omnibus 

 alte connatis scariosis; foliolis 7-8-jugis oblongis lanceolatisve acutatis; 

 pedunculis folia multo superantibus ; racemo brevi 5 - 10-floro ; pedi- 

 cellis tubo calycis nigro-pubescens subaequilongis ; corolla violacea, ca- 

 rina apice inflexa subproducta alas adiequante ; legumine immaturo 

 ovato-lanceolato nigro- vel cinereo-pubescente stipite brevi calyce incluso 

 suifulto. — Rocky Mountains on the British Boundary, Bourgeau, in 

 Palliser's expedition (ex herb. Kew.). — Mature fruit unknown, per- 

 haps turgid and not of this section. The forming legume is rounded 

 at the base, on a very short included stipe, the dorsal suture not at all 

 introflexed. Flowers 4^ or 5 lines long, apparently deeply colored : 

 vexillum a little exceeding the wings and large keel. Calyx oblong- 

 campanulate, acute at the base, the teeth rather stout. — I had taken 

 this for the A. vaginatus of Richardson and Hooker. But I am in- 

 formed that Richardson's specimen in the Hookei'ian herbarium is 

 different, and has been referred by Planchon to Phaca australis. 



96. A. Palliseri, sp. nov. Parce striguloso-pubescens, glabratus ; 

 caulibus (subpedalibus) e caudice lignescente adsurgentibus ramosis 

 gracilibus rigidulis ; stipulis superioribus herbaceis discretis ; foliolis 

 4 - 9-jugis linearibus lanceolatisve obtusiusculis ; pedunculis folium 

 aequantibus; racemo sparsi-(7- 12-)floro; pedicellis calyce brevi aequi- 

 longis ; corolla albido-purpurascente, carina apice angustata inflexa 

 violacea alls breviore ; legumine lineai'i (f - |-pollicari lineara lato) 

 glaberrimo stipite brevissimo at manifesto calyce incluso suffulto, 



