OF ARTS AND SCIENCES. 115 



the upper sessile and abruptly rounded at base ; flowers androgynous ; 

 calyx very small, 5 -cleft ; bracts 1^-2 lines long, united below, pan- 

 duriform, the terminal lobe entire, the margin below it gash-toothed, 

 the sides doubly or triply tooth-crested ; styles short ; seed not filling 

 the theca. — Cultivated from Arizona seeds ; fruit collected by the 

 Indians for food. 



26, A. BRACTBOSA. {OUone, Durand & Hilgard, Pacific R. R. Rep. 

 5. 13, t. 14.) Erect, " 2-3 feet high," branched, leafy, hoary-farinose; 

 leaves ^1 inch long, rather thin, acuminate, sessile ; male flowers in 

 dense globose clusters in a naked terminal panicle, the calyx deeply 

 5-cleft; fruiting bracts 1^ lines long, in small axillary clusters, orbicu- 

 lar with a short cuneate base, the terminal lobe linear or lanceolate, 

 margins irregularly gash-toothed and the sides shortly muricate. — 

 Collected only by Heermann on Pose Creek, California. 



§ 7. Fruiting bracts rhombic-orbiculai', subcompressed, 2-4 lines 

 long, indurated, closed, usually strongl)"- muricate and with a 

 herbaceous toothed and undulate margin : male flowers mostly 

 in terminal spikes: leaves triangular and subhastate, the lower 

 opposite. 



27. A. ARGENTEA, Nutt. Erect, ascending, or decumbent, |— 1 \ feet 

 high, diffusely branched and leafy, grayish scurfy or nearly glabrous ; 

 leaves rather thick, deltoid or triangular-ovate or subrhombic," often 

 subhastate, i-2 inches long, acute or obtuse, petioled or the upper 

 sessile ; calyx deeply 5-cleft ; fruiting bracts shortly pedicelled, united 

 nearly or quite to the a^^ex, the more or less dilated free margins 

 extending nearly to the base, often parted at the apex, more or less 

 acutely and deeply toothed, the sides usually appendaged with herba- 

 ceously tipped projections or with a double toothed crest. — From the 

 Upper Missouri to Colorado and North Eastern California. A variable 

 species. 



Atriplex argentea. Nuttall, Genera, 1. 198. James, Catalogue, 178. Spreng. 

 Syst. 1. 918. Dietrich, Syn. 5. 538. Torrey, Ann. N.Y. Lye. 2. 240. 

 Coulter, Hayden's Rep., 1872, 779. 



Ohione (?) argantea. Moquin, Enura. Chenop. 76; DC. Prorlr. 132. 115. 

 Torrey, Nicollet's Rep. 158. Eugelmann, PI. Upp. Miss. 206. Newberry, 

 Pac. R. R. Rep. 6. 87. Gray, Pae. R. R. Rep. 12. 47 ; Proc. Philad. 

 Acad., 1863, 75. Porter, Hayden's Rep., 1870, 481 ; Fl. Col. 117. Wat- 

 son, King's Rep. 5. 290. 



Atriplex arenaria. Hook. Pi. Geyer in Lond. Jour. Bot. 5. 261 ? 



Collectors : — Nicollet ; 97,621 Fremont; Suckley; 484 Hall & Harbour; 

 985 Watson ; Vasey ; Haydea ; Gray ; Greene ; Allen. 



