120 PROCEEDINGS OF THE AMERICAN ACADEMY 



base, petioled, coarsely aud acutely dentate ; flowers axillary or panieu- 

 lately spicate ; calyx large, 5-parted nearly to the base ; fruiting bracts 

 shortly j^edicelled, the wing-like reniform margin submembranous ; 

 styles elongated, exserted ; seed a line broad. — In alkaline plains from 

 Southeastern California to Southern Utah. 



Obione hijmenelytra. Torrey, Pac. R. R. Rep. 4. 129, t. 20 ; Bot. Mex. Bound. 



182 ; Ives's Rep. 25. Anderson, Fl. Nevada, 125. Watson, King's Kep. 

 5. 290. 



Collectors: — Fremont; Emory; Bigelow ; Schott ; Wheeler. 



§ 11. Fruiting bracts indurated, not scurfy, united to the apex, not 

 muricately appendaged, with four broad wings, distinct and not 

 evidently marginal, membranous, veined, entire or toothed : leaves 

 narrow, entire, the lower often opposite : an erect diffusely branched 

 shrub, monoecious or dicecious. 



40. A. CANESCENS, James. One to two feet high ; leaves narrowly 

 oblong or oblanceolate, 1-2 inches long, obtuse or acutish, narrowed at 

 base, sessile ; flowers axillary or in naked spikes ; calyx o-cleft ; bracts 

 at first ovate, adherent below to the pedicel of the ovary and contracted 

 above to a very narrow orifice, subcomjiressed in fruit and more or less 

 pedicelled, the wings 4-6 lines in diameter and extending above the 

 narrow toothed apex ; seed ovate, §-1 line long. — From Colorado to 

 Northern Nevada, and southward to New Mexico, Northern Mexico, 

 and Southern California. lias been often confounded with A. Nuttallii. 



Callli/ojiinn canescens. Pursh, Flora, 370. 



Atn'plex canescens. James, Catalogue, 178. Torrey, Ann. N.Y. Lye. 2. 239. 



Pterochiton occidentale. Torrey, Fremont's Rep. 318 (and Bot. Zeit. 5.57; 



Walpers, Ann. 1. 567). 

 Pterochiton canescens. Nuttall, PI. Gambel. in Jour. Acad. Phil. 1. 184. 

 Obione tetraptera. Benth. Bot. Sulphur, 48 (and Walpers, Ann. 1. 567). 

 Obione canescens. Torrey, Fremont's Rep. 95, in part ; Emory's Rep. 411 ; 



Sitgreave's Rep. 169 ; IMarcy's Rep. 296 ; Stansbury's Rep. 395, in part; 



Pac. R. R. Rep. 4. 7 and 130 ; same, 7. 18 (1) ; Bot. Mex. Bound. 182, and 



183 in part; Ives's Rep. 25. Torr. & Gray, Pac. R.R. Rep. 2. 173 (1) 

 Durand, Fl. Utah, 174, in part. Watson, King's Rep. 5. 289, in part. 



Obione occidentalis. Moquin, DC. Prodr. 13-'. 112. Dur. & Hilg. Pac. R. R. 



Rep. 5. 13. Torrey, Bot. Mex. Bound. 184. 

 Atriplex Berlandieri. Moquin, Enum. Chenop. 65. Dietrich, Syn. 5. 537. 

 Obione Berlandieri. Moquin, DC. Prodr. 13'-. 114. 

 Atrijilex occidentalis. Dietrich, Syn. 5. 537. 



Collectors:— James; 45,94,204,211,433 Fremont; 190, 191, 1347, 1450 

 Berlandier; 343, 575, 1740, 1741 Wright; 522 Gregg; 709 Fendler; 

 Emory; Abert; IMarcy ; Stansbury ; 139 Bigelow; Parry; Cooper; 

 982 Watson; 487, 488 Vasey ; 861 Kellogg & Harford; 343 Greene; 

 Thompson. 



