Part 2, 1917] AMARANTHACEAE 107 
oblong, 2-3 mm. jong, acute or acutish, 1-nerved, the nerve usually excurrent, glabrous; sepals 
of the pistillate flowers narrowly to broadly spatulate, 2~3.5 mm. long, obtuse, often emarginate, 
occasionally obscurely denticulate, often tinged with red, the outer ones often acute, 1-nerved, 
the nerves green, rarely excurrent; stamens 5; style-branches 2 or rarely 3; ttricle subglobose, 
somewhat compressed, circumscissile; seed oval, longer than broad, about 1.3 mm. long, dark 
reddish-brown. 
Tyre Locality: Larkins Station, San Diego County, California. 
DistRisution: Dry or moist soil, California to Kansas and Texas, south to central Mexico; 
adventive in the eastern United States. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. f. 1404; ed. 2. f. 1661. 
10. Amaranthus Torreyi (A. Gray) Benth.; S. Wats. Bot. Calif. 2: 
42. 1880. 
Sarratia Berlandiert Torr. Bot. Mex. Bound. Surv. 179. 1859. - Not S. Berlandieri Moq. 1849. 
Amblogyne Torreyi A. Gray, Proc. Am. Acad. 5: 167. 1861. 
Stems stout, erect, whitish, glabrous, striate, simple or branched at the base, branched 
above; petioles slender, 5-7 mm. long; leaf-blades oval-oblong to oblong, oblanceolate, or 
oblong-linear, 1.5-8 cm. long, rounded to acutish at the apex, obtuse to attenuate at the base, 
yellowish-green, glabrous; flowers dioecious, in slender, dense or interrupted, terminal spikes; 
bracts lanceolate, acuminate, with spine-like tips, usually shorter than the flowers; sepals of 
the staminate flowers oblong, 2~3 mm. long, scarious, often tinged with pink, obtuse or acute, 
the midnerve usually excurrent; sepals of the pistillate flowers narrowly spatulate, slightly 
indurate at the base, 2 mm. long, obtuse, I-nerved, the nerve excurrent; stamens 5; style- 
branches 3; utricle subglobose, circumscissile; seed about 1 mm. in diameter, dark reddish- 
brown. 
TYvPE Locality: Mountains of the Cibola, a tributary of the Rio Grande, western Texas. 
DisrrRiBuTIon: Dry soil, Iowa to Texas, west to Colorado and New Mexico; Nevada (?): 
11. Amaranthus myrianthus Standley, Bull. Torrey Club 41: 506. 
1914. 
Amaranthus Greggii Muelleri Uline & Bray, Bot. Gaz.19: 272. 1894. 
Stems prostrate or ascending, 3-10 dm. long, much branched, stout, succulent, glabrous 
or sparsely villous; petioles stout, 4-15 mm. long; leaf-blades rounded-oval to oval or nearly 
orbicular, 6-20 mm. long, 5-15 mm. wide, rounded or emarginate at the apex, rounded to 
cuneate at the base, thick and firm, very conspicuously veined, villous beneath, at least when 
young; inflorescence dioecious, of numerous paniculate many-flowered spikes, these dense 
or sometimes interrupted below, 6-40 cm. long and 1-2 cm. thick in the pistillate plants, the 
spikes of the staminate plants shorter, somewhat interrupted, few-flowered, 7 mm. or less in 
diameter; bracts 2 or 3 at the base of each flower, ovate or broadly ovate, acute, sometimes 
pungent-tipped, usually half as long as the sepals but sometimes nearly equaling them; sepals 
of the staminate flowers oblong to oval, 2.5 mm. long, obtuse, apiculate, thin and scarious 
except along the single green nerve; sepals of the pistillate flowers 2 mm. long, spatulate, or 
narrowly oblong and narrowed toward the base, broadly obtuse to acutish, glabrous, rather 
thick and firm, much thickened and united at the base, the midnerve usually excurrent; 
stamens 5; style-branches 3, slender, elongate, divaricate; utricle obovoid, about equaling the 
sepals, thin-walled, nearly smooth, circumscissile; seed rotund, black and shining, about 1 mm. 
in diameter. 
Type LocaLity: Vicinity of La Barra, 8 km. east of Tampico, Tamaulipas. 
DISTRIBUTION: Seashores, Tamaulipas to Vera Cruz. 
12. Amaranthus obcordatus (A. Gray) Standley, sp. nov. 
Amblogyne urceolata obcordata A. Gray, Proc, Am. Acad. 5: 168. 1861 
‘Amaranthus urceolatus obcordatus Uline & Bray, Bot. Gaz. 19: 269. 1894, 
Anaanihis urceolatus Jonesii Uline & Bray, Bot. Gaz. 19: 269. 1894. 
