78 CHENOPODIACEAE 



long, acute or obtuse at apex, rounded or truncate at base, often hastate, sinuate-dentate to 

 entire, farinose when young, glabrate in age; flowers monoecious, in interrupted paniculate 

 slender spikes; pistillate flowers sometimes with 3-5-lobed calyx, but most of them without 

 calyx and enclosed by 2 bracts ; fruiting bracts broadly oval or ovate, 5-18 mm. long, united 

 only at base, rounded to acute at apex, entire or denticulate ; seed 2 mm. long, black. 



Low ground, Upper Sonoran and Transition Zones; introduced about Klamath Falls, Oregon, and in the 

 San Francisco Bay region. Native of central Asia. July-Sept. A crimson-leaved horticultural variety is some- 

 times cultivated as an ornamental. 



2. Atriplex Gmelinii C. A. Mey. Gmelin's Saltweed or Orache. Fig. 1502. 



Atriplex Gmelinii C. A. Mey. Mem. Acad. St. Petersb. VI. 4 2 : 160. 1838. 



Atriplex angustifolia var. obtusa Cham. Linnaea 6: 569. 1831. 



Atriplex patula subsp. obtusa Hall & Clements, Carnegie Inst. Wash. Pub. no. 326: 252. 1923. 



Erect or decumbent annual, 1-5 dm. high, the branches succulent, finely farinose when 

 young, soon glabrate. Lower leaves opposite, upper alternate, oblong or narrowly oblong, the 

 uppermost usually linear, 15-50 mm. long, petioled, usually entire, rarely inconspicuously toothed 

 below or rarely hastate, thin, finely farinose when young, becoming glabrous and bright green; 

 flowers monoecious, in dense interrupted terminal and axillary spikes; bracts sessile, ovate- 

 rhombic or ovate-oblong, obtuse or acute, 3-12 mm. long, united at base, entire or rarely sub- 

 hastate. 



On or near the seashore, Canadian Zone; Alaska to central California. Type locality: Eschscholtz Bay, 

 Kotzebue Sound, Alaska. Aug.-Nov. 



Atriplex Gmelinii var. zosteraefolia (Hook.) Moq. in DC. Prod. 13*: 97. 1849. General habit of the 

 typical species, but leaves and bracts linear. Straits of Juan de Fuca, Washington. 



3. Atriplex joaquiniana A. Nels. San Joaquin Saltbush. Fig. 1503. 



Atriplex spicata S. Wats. Proc. Amer. Acad. 9: 108. 1874. Not Stokes, 1812. 



Atriplex joaquiniana A. Nels. Proc. Biol. Soc. Wash. 17: 99. 1904. 



Atriplex patula subsp. spicata Hall & Clements, Carnegie Inst. Wash. Pub. no. 326: 251. 1923. 



An erect annual, 3-10 dm. high, the branches few, stout, ascending, farinose when young, 

 glabrate in age. Leaves except the lowest alternate, deltoid to ovate-rhombic, 3-7_ cm. long, 

 often as broad, sinuate-dentate or repand-dentate, or the upper entire and narrower with slender 

 petioles, farinose when young, green and glabrate in age ; flowers in dense or interrupted naked 

 spikes ; fruiting bracts sessile, ovate-oblong or round-deltoid, 3 mm. long, united at the rounded 

 or truncate base, obtuse or acutish, not margined or appendaged, or the sides faintly tuberculate. 



Alkaline soils, Upper Sonoran Zone; Sacramento and San Joaquin Valleys and the Inner Coast Ranges of 

 central California. Type locality: Livermore Pass, California. April-Sept. 



4. Atriplex patula L. Spear Orache or Saltbush. Fig. 1504. 



Atriplex patula L. Sp. PI. 1053. 1753. 



Annual with erect to procumbent branches, 3-9 dm. high, furfuraceous when young, usually 

 becoming glabrous and green. Leaves lanceolate to rhombic-lanceolate, 2.5-8 cm. long, short- 

 petioled, cuneate at base, or the lower sometimes hastate, entire or sometimes sinuate-dentate, 

 bright green and glabrous or thinly farinose beneath; fruiting bracts rhombic-oval, 2-6 mm. 

 long, often slightly hastate, acute or acutish, denticulate, tuberculate on the sides, united only at 

 the rounded or broadly cuneate base. 



Salt marshes, Boreal to Sonoran Zones; British Columbia to southern California; also on the Atlantic Coast 

 and in Eurasia. Type locality: Europe. July-Nov. 



5. Atriplex hastata L. Halberd-leaved Orache or Saltbush. Fig. 1505. 



Atriplex hastata L. Sp. PI. 1053. 1753. 



Atriplex patula var. hastata A. Gray, Man. ed. 5. 409. 1867. 



Annual with procumbent to erect stems, 3-9 dm. high, usually much branched, more or less 

 furfuraceous, glabrate in age and green or stramineous. Lower leaves triangular-hastate to 

 rounded-deltoid, 2.5-7 cm. long, acute at apex, usually truncate at base, sinuate-dentate or 

 shallowly repand, rarely entire, the basal lobes acute ; upper leaves oblong-hastate to lanceolate, 

 usually entire, bright green or densely furfuraceous; flowers in dense uninterrupted often 

 paniculate spikes; fruiting bracts ovate-deltoid or orbicular-deltoid, 3-7 mm. long, acute or 

 acutish at apex, denticulate, the sides usually tuberculate, united only at the truncate or rounded 

 base. 



Mostly in saline soils near the coast, Boreal to Sonoran Zones; British Columbia to southern California and 

 across the continent, also in the Old World. More common in the Pacific States than the preceding species to 

 which it is closely related. Type locality: Europe. June-Nov. 



6. Atriplex rosea L. Red Orache or Saltbush. Fig. 1506. 



Atriplex rosea L. Sp. PI. ed. 2. 1493. 1763. 

 Atriplex spatiosa A. Nels. Bot. Gaz. 34: 360. 1902. 



Annual, with erect much branched stems, 3-10 dm. high, the branches ascending or spreading, 

 terete, stramineous or white, furfuraceous or glabrate. Leaves numerous, 2-8 cm. long, the petals 

 one-third the length of the blade, ovate to rhombic-ovate, cuneate or rounded at base, sinuate- 

 dentate or repand-dentate, green or usually grayish, sparsely to densely mealy ; flowers in axillary 



