OF ARTS AND SCIENCES: NOVEMBER 11, 1863. 211 



arcuato-incurvo. — Rocky Mountains, about the head-waters of the 

 Platte or Nebraska. 



Var. ? MixOR. A. cyaneus, Gray, PI. Fendl. p. 34 (mao;na pro 

 parte). Stepe subcaulescens ; foliis minoribus ; legumine oblongo- seu 

 lanceolato-lineari arcuato-incurvo postice profunde sulcato-introflexo. — 

 ]\Iountains and plains, from the southern frontier of New Mexico and 

 W. Texas to Nebraska and the Rocky Mountains. — Probably only a 

 smaller form of A. Shortiamis, between that and A. Missouriensis, 

 which it closely resembles (except in the fruit and in usually wanting 

 dark hairs), and with which I have more than once confounded it. In 

 fruit it is distinguished from that species by its long (1^ inches or 

 more), pointed, and strongly arcuate legume. Its cross-section is ob- 

 cordate-two-lobed, the intruded dorsal approaching the externally ca- 

 rinate ventral suture. 



51. A. Parrti, Gray, Enum. coll. Parry, in Sill. Jour. n. ser. 33, 

 p. 410, & Enum. coll. Parry, Hall, & Harbour, in Proceed. Acad. 

 Philad. March, 1863, p. 60. Brevicaulis, caBspitoso-humifusus, pilis 

 lasis patentibus villosus ; pedunculis breviusculis 6 - 10-floris ; floribus 

 laxe subcapitatis ; calycis dentibus tubum oblongum subaequantibus ; 

 corolla albida seu flavidula (lin. 6-8 longa), carina apice purpura- 

 scente ; legumine pubescente oblongo-lanceolato, maturo arcuatim in- 

 curvo demumve circinato valde obcompresso tam antice quam postice 

 sulcato-impresso et propter suturas contiguas fere bilocellato. — Rocky 

 Mountains, both low and subalpine, in Colorado Territory, and south 

 to the Llano Estacado in N. "W". Texas. I find in Dr. Torrey's herba- 

 rium a specimen collected by Fremont in his second expedition (station 

 not recorded), with very ripe legumes : these are an inch or rather 

 more in length, strongly rugulose, much obcompressed, and curved 

 nearly into a ring. In Dr. Parry's specimens they are much less 

 incurved and less rigid. 



52. A. GLAREOsus, Dougl. in Hook. Fl. Bor.-Am. 1, p. 152. A. 

 argophyllus, Nutt. in Torr. & Gray, Fl. 1. c. excl. syn. Ctespitoso- 

 depressus, pilis incumbentibus albidis villoso-sericeus ; pedunculis 3-6- 

 floris folia baud superantibus ; floribus angustis (lin. 9-12 longis) ; 

 calycis dentibus tubo longe cylindrico triplo brevioribus ; corolla la;te 

 violacea ; legumine immature oblongo-ovato apice attenuato incurvo 

 sericeo-pubescente, " maturo subglabro." — Dry gravelly banks of 

 streams, in and near the Rocky IMountains, on the southern tributaries 

 of the Columbia River, and of the Platte. In the herbarium, without 



