626 - PROCEEDINGS OF THE AMERICAN ACADEMY 



the thin septum extending so as nearly or quite to touch the ventral 

 suture. 



Astragalus Whitneti: (Injlati,) striguloso-puberulus ; caulibus 

 e radice perenni conferte ramosis spithamreis ; stipulis brevibus adver- 

 sus petiolum connatis ; foliolis 5-9-jugis lineari-oblongis ; pedunculis 

 folium adtequantibus subcapitato-plurifloris ; calycis dentibus triangula- 

 tis tubo campanulato quadruplo brevioribus ; corolla Isete purpurea, 

 carina falcato-incurva alas adaequante vexillo paullo breviore ; legumine 

 pendente glaberrimo (maculoso) vesicario ovali subpollicari apice ob- 

 tusissimo basi in stipitem e calyce leviter exsertem attenuate. — On the 

 same mountain with the preceding species, in loose soil, near the sum- 

 mit, alt. 10,000 feet. — This species, which may appropriately bear 

 the name of the distinguished Director of the California Geological 

 Survey, would appear to be a near relative of the incompletely known 

 A. Hookerianus, Gray, Astrag., 1. c, p. 215 ; but the pubescence is 

 strigulose, the stipules concreted and not scarious, and the pods very 

 much smaller and glabrous. The young pods on the flowering speci- 

 mens are not quite an inch long (including the short stipe) : a loose 

 one which seems as if full grown is not larger, and is mottled with pur- 

 ple. The flowers are half an inch long, and apparently blue or pur- 

 ple ; in Dr. Brewer's notes upon the fresh plant, they are said to be 

 " bright red-violet." 



Astragalus platttropis : multiceps e rhizomatibus elongatis, 

 nanus, vix caulescens, sericeo-argentatus ; foliolis 3 - 5-jugis obovatis ; 

 pedunculis scapiformibus folium adaequantibus apice capitato-pauciflo- 

 ris ; calycis dentibus subulatis tubo campanulato paullo brevioribus ; 

 corollse (albfe seu lutescentis apice purpurataj), carina dilatata recta 

 apice hinc rotundata alas vexilloque aequilonga ; legumine globoso-ovato 

 membranaceo vesicario-inflato (vix pollicari) estipitato cinereo-puberulo 

 polyspermo bilocellato, septo versus medium seminifero. — With the 

 preceding species, in loose gravel and sand near the summit (alt. 

 10,000 feet). — Leaves and flowering stems or scapes rising only two 

 or three inches above the soil. Stipules triangular or ovate, canescent. 

 Leaflets 3 or 4 lines long. Flowers 5 or 6 in a small head, barely 4 

 lines in length ; the broad keel tipped with purple ; the rest of the 

 corolla apparently white or yellowish. Forming legumes canescent, 

 when older glabrate, scarcely grooved at the sutures ; both sutures are 

 septiferous, the funiculi being adnate to the ventral portion of the sep- 



