GOOSEFOOT FAMILY 79 



glomerules and usually interrupted terminal spikes ; fruiting bracts sessile, rhombic to cuneate- 

 orbicular, 4-12 mm. long, united only at base, acute at apex, dentate, the sides usually short- 

 tuberculate. 



Alkaline soils Transition and Sonoran Zones; southeastern Washington to southern California, east to 

 Wyoming and northern Mexico, adventive on the Atlantic Coast; also widely distributed in Eurasia, northern 

 Africa, and Australia. Type locality: southern Europe. July-Nov. 



Atriplex Lindleyi Moq. in DC. Prod. 13 a : 100. 1849. An erect or ascending perennial, 2-4 dm. high, 

 the branches terete white-furfuraceous. Lower leaves with petioles over half the length oi the blade, the upper 

 sessile, ovate or ovate-rhombic, 10-15 mm. long, acute or obtuse, cuneate or attenuate at base; flowers monoecious, 

 SDicate or in axillary glomerules; fruiting bracts 8-12 mm. long, hemispheric or broadly turbinate, inflated and 

 loosely spongy, bordered by a narrow wing or an acute angle, united except for a.smail orifice concealed by small 

 entire or 3-toothed valves. Native of Australia, sparingly escaped from cultivation in San Diego County, Cali- 

 fornia. 



7. Atriplex Phyllostegia (Torr.) S. Wats. Arrow Saltbush. Fig. 1507. 



Obione Phyllostegia Torr. ex S. Wats. Bot. King Expl. 291. 1871. 

 Atriplex Phyllostegia S. Wats. Proc. Araer. Acad. 9: 108. 1874. 

 Endolepis Phyllostegia Rydb. Bull. Torrey Club 39: 312. 1912. 

 Endolepis Covillei Standley, N. Amer. Fl. 21 : 73. 1916. 

 Atriplex Covillei J. F. Macbride, Contr. Gray Herb. no. 53: 11. 1918. 



Annual with much branched erect stems, 2-6 dm. high, the branches terete, mostly ascending, 

 sparsely furfuraceous or glabrate. Leaves broadly ovate to deltoid-ovate, 2-5 cm. long, acute or 

 acuminate, truncate or cuneate at base, thin, green and sparsely furfuraceous or glabrous, the 

 petioles slender, equaling the leaves; flowers monoecious or some plants with only pistillate 

 flowers; fruiting bracts often short-pedicelled, 5-20 mm. long, lanceolate-oblong, entire or 

 laciniate, united nearly to the apex which is prolonged into an oblong or linear lobe, the sides often 

 bearing linear protuberances. 



Alkaline soils, Sonoran Zones; Klamath and Lake Counties, Oregon, the San Joaquin Valley and Mojave 

 Desert, California, east to Utah and northern Arizona. Type locality: between Truckee and Humboldt Kivers, 

 western Nevada. April-Aug. 



8. Atriplex truncata (Torr.) A. Gray. Truncate Saltbush. Fig. 1508. 



Obione truncata Torr. ex S. Wats. Bot. King Expl. 291. 1871. 

 Atriplex truncata A. Gray, Proc. Amer. Acad. 8: 398. 1872. 

 Atriplex truncata var. stricta A. Gray, loc. cit. 



Annual with erect sparsely branched stems, 2-10 dm. high, the branches mostly ascending, 

 obtusely angled, furfuraceous or glabrate below. Leaves grayish furfuraceous, especially beneath, 

 round-ovate or deltoid-ovate, often somewhat hastate, 1.5-4 cm. long, the lower short-petioled 

 and truncate or abruptly cuneate at base, the upper sessile and often cordate-clasping; flowers 

 monoecious, in axillary glomerules ; fruiting bracts 2-3 mm. long, broadly cuneate, united to the 

 truncate or broadly rounded, shallowly 3-toothed apex, the sides smooth, or obscurely tuberculate. 



Alkaline soils, Arid Transition and Upper Sonoran Zones: British Columbia southward, east of the Cascade- 

 Sierra Nevada Divide, to eastern California, and east to Colorado and New Mexico. Type locality: on the 

 Truckee River, Nevada. May-July. 



9. Atriplex coronata S. Wats. Crown Saltbush or Crown-scale. Fig. 1509. 



Atriplex coronata S. Wats. Proc. Amer. Acad. 9: 114. 1874. 



Atriplex verna Jepson, Pittonia 2: 305. 1892. 



Atriplex elegans var. coronata M. E. Jones, Contr. West. Bot. No. 12: 6. 1908. 



Annual, the stems erect, much branched, 1-4 dm. high, the branches terete, furfuraceous, be- 

 coming glabrate. Leaves many, the lower short-petioled, the upper sessile, ovate to ovate-oblong 

 or lanceolate, 10-25 mm. long, cuneate or rounded at base, acute at apex, entire, thin and fur- 

 furaceous or often glabrate above ; flowers monoecious, both kinds in the same axillary clusters ; 

 fruiting bracts flabellate or broadly rhombic, 4-5 mm. long, united to above the middle, laciniate- 

 dentate, the sides slightly or abundantly tuberculate. 



Alkaline soils, Sonoran Zones; Sacramento Valley to southern California. Type locality: Livermore Pass, 

 California. May-July. 



10. Atriplex argentea Nutt. Silver Saltbush or Silver-scale. Fig. 1510. 



Atriplex argentea Nutt. Gen. 1: 198. 1818. 



Annual, erect, much branched and bushy, the branches angled, ascending or divaricate, white- 

 furfuraceous. Lower leaves short-petioled, the upper subsessile, 2-6 cm. long, deltoid-ovate or 

 round-ovate, rounded or broadly cuneate at base and often slightly hastate, entire, sparingly 

 dentate or undulate, densely grayish furfuraceous ; flowers monoecious, usually both kinds in the 

 same clusters; fruiting bracts compressed, obovate, 4-8 mm. long, united to near the apex, the 

 free green margins extending nearly to the base, dentate, the sides slightly tuberculate. 



Alkaline soils, Arid Transition and Upper Sonoran Zones: Saskatchewan to eastern Oregon and northeastern 

 California, east to North Dakota and New Mexico. Type locality: on sterile and saline places near the Missouri 

 River. June-Oct. 



Atriplex argentea var. Hillmanii M. E. Jones, Contr. West. Bot. No. 11: 21. 1903. (A. Hillmanii 

 Standley, N. Amer. Fl. 21: 48. 1916.) Low spreading plants, bracts not compressed, sessile, indurate, with 

 acutely dentate margins, the sides covered with flat, acute crest-like appendages. Southeastern Oregon and west- 

 ern Nevada, on alkaline plains. 



