112 PROCEEDINGS OF THE AMERICAN ACADEMY 



14. A. SAC CARTA. Ascending, 3-5 inches high, diffusely branched, 

 leafy, densely scurfy ; leaves very broadly ovate, ^ inch long, subcor- 

 date at base, acute, very shortly petioled or sessile ; flowers axillary ; 

 calyx 5-cleft to the middle ; fruiting bracts nearly as in the last, but not 

 at all appendaged, pedicelled and often deflexed, the truncate summit 

 entire or suberose. — Collected by Dr. A. Gray in 1872, on the desert 

 plains of Southern "Wyoming or Northern Utah. 



15. A. WoLFii. Low, slender, 6 inches high, branching from the 

 base, scurfy-canescent and reddish ; lea"9^es linear, 4—6 lines long, acute, 

 sessile ; flowers very small, in androgynous axillary clusters ; calyx 

 deeply 5-cleft ; fruiting bracts as in A. truncata, i— | line long, sessile, 

 the herbaceous summit sq|aiewhat broader than the body, with a quadri- 

 lateral tooth on each side and a small acute tooth in the centre ; styles 

 very short. — Collected by Mr. "Wolf, upon Lt. "Wheeler's survey, on 

 alkaline flats at Saguache, Central Colorado. 



16. A. ARENARiA, Nutt. Asccndiug, i— 1 foot high or more, dif- 

 fusely branched, leafy, silvery-mealy ; leaves thin, oblanceolate, £-1 ^ 

 inches long, acute or obtuse, attenuate to a short petiole ; flowers axil- 

 lary, androgynous; fruiting bracts sessile, broadly cuneate, 1^3 lines 

 broad, acutely 3-5-toothed at the rounded herbaceous summit, the sides 

 strongly reticulated and not appendaged, or with 2-3 hooked projec- 

 tions, or more rarely doubly crested. — On the seacoast from Nova 

 Scotia to Key West. 



Atriplex arenaria. Nuttall, Genera, 1. 198. Spreng. Syst. 1. 918. Dietrich, 



Syn. 6. 535. Gray, Manual, 409. 

 Obione arenaria. Moquin, Enum. Chenop. 71 ; DC. Prodr. IS'^. 107. Torrey, 



Flora N. Y. 2. 138. Chapman, 377. Smith, Proc. Acad. PLil., 1867, 22. 



Matthew, Canad. Nat. 12. 159. 



17. A. MICROCARPA, Dietrich. Slender, ^1 foot high, "procum- 

 bent" or erect, somewhat branched, leafy, canescent; leaves ovate to 

 oblong, 3-5 lines long, obtuse or acutish, cuneate at base, sessile ; 

 flowers in small axillary clusters, the staminate dense and mostly ter- 

 minal ; calyx deeply 5-cleft ; fruiting bracts but half a line broad, orbic- 

 ular or obovate, sessile, the summit narrowly margined with 3-5 small 

 herbaceous teeth, the aides naked or minutely bi-tuberculate ; styles 

 short. — San Diego, California ; collected by Barclay and Newberry. 

 Mr. Bentham has published a second A. microcarpa in Fl. Australi- 

 ensis, 5. 176. 



Obione microcarpa. Benth. Bot. Sulphur, 48. Moquin, DC. Prodr. 132. 111. 



Walpers, Ann. 1. 567. 

 Atriplex microcarpa. Dietrich, Syn. 5. 636. 

 Obione arenaria f Torrey, Ives's Rep. 25. Hook. & Am. Bot. Beechey, 157 1 



