710 EUPHORBIACEAE 
sessile, completely clothed with white hairs: glands 4, somewhat elongated transversely, 
the appendages obsolete : capsules slightly depressed, 1.5-2 mm. broad, glabrous near the 
base, the lobes keeled: seeds sharply 4-angled, the faces with 4-6 transverse ridges. 
[Euphorbia Laredana Millsp. ] 
In dry soil, near Laredo, southern Texas. Spring and summer. 
11. Chamaesyce Gárberi (Engelm.) Small. Annual or biennial, finely canes- 
cent. Stems widely branched, sometimes from the base, the branches spreading or ascend- 
ing or decumbent, 1—4 dm. long, more or less zigzag: leaf-blades ovate or oval, 4-10 mm. 
long, apiculate, entire, oblique at the base, short-petioled: involucres solitary or few in 
clusters, campanulate, about 1 mm. high, as long as the peduncle or longer: nearly gla- 
brous: glands transversely oblong, 0.4 mm. broad ; appendages mere narrow dentate 
borders: capsules slightly broader than high, 1.5 mm. high, the angles rather sharp, spar- 
ingly poean all over: seeds reddish brown, barely 1 mm. long, with indistinct transverse 
wrinkles. [Euphorbia Garberi Engelm. ] 
In sand, Florida and Alabama. Spring to winter. 
12. Chamaesyce cineráscens (Engelm.) Small. Annual or biennial, finely canes- 
cent. Stems branched at the base, the branches spreading or prostrate, 0.5-2 dm. long, 
slender, forking: leaves numerous ; blades suborbicular to ovate or oval-oblong, 3-6 mm. 
long, obtuse, entire, truncate at the base, short-petioled : involucres turbinate-campanulate, 
less than 1 mm. high, pale, stout-peduncled: glands minute, often purple, nearly naked; 
7 thu A minute or obsolete: capsules fully 1 mm. high, a little broader, pubescent, 
the angles sharp: seeds pale gray, oblong, about 1 mm. long, sharply 4-angled, the faces 
prominently wrinkled transversely. [Euphorbia cinerascens Esselm.] 
In dry soil, Texas and adjacent Mexico. Spring to fall. 
13. Chamaesyce deltoidea (Engelm.) Small. Perennial, nearly glabrous. Stems 
more or less diffusely branched at the base, the branches slender, zigzag, 5-10 cm. long, 
usually wiry: leaf-blades thickish, deltoid-ovate or reniform, 1.5-3 mm. long, obtuse or 
retuse, oblique, slightly revolute, short-petioled: involucres globose-campanulate, less 
than 1 mm. long, as long as the peduncles or shorter : glands transversely oblong, minute, 
0.3 mm. broad ; appendages obsolete: capsules barely 1 mm. long, smooth and glabrous : 
seeds minute. [Euphorbia deltoidea Engelm. | 
In sand, southern peninsular Florida. Spring to winter. 
14. Chamaesyce albomarginata (T. & G.) Small. Perennial, glabrous. Stems dif- 
fusely much branched from the base, the branches wire-like, 2-15 cm. long, sometimes 
very numerous: leaf-blades suborbicular or ovate-orbicular, 4-8 mm. long, obtuse or 
acutish, entire, truncate or subcordate at the base, manifestly petioled : involucres campan- 
ulate, fully 1 mm. high, as long as the peduncles or shorter: glands transversely oval, 
about 0.5 mm. wide; appendages white, petal-like, fan-shaped, 1.5-2 mm. broad, entire or 
crenulate: capsules globose-ovoid, 2 mm. long, sharply 3-angled: seeds oblong-ovoid, 
1-1.3 mm. long. [Euphorbia albomarginata T. & G.] 
In dry soil, Texas to California. Spring to fall. 
15. Chamaesyce Féndler (T. & G.) Small Annual (or perennial by a voy 
root), pale green, glabrous. Stems diffusely branched from the base, the branches spread- 
ing, wiry, 1-2 mm. long, brittle: leaf-blades suborbicular, oval or elliptic, 3-8 mm. long, 
obtuse, entire, short-petioled, the base oblique, obtuse or subcordate ; stipules usually a 
fringe of short bristles: involucres solitary in the axils, sometimes clustered toward the 
ends of the branches, campanulate, 2-5 mm. high: glands saucer-shaped, oval; appen- 
dages irregular, entire or slightly lobed: peduncles about;as long as the involucres: cap- 
sules deflexed, 3 mm. in diameter, sharply 3-lobed : seeds ovoid, 1.5 mm. long, trans- 
versely wrinkled. [Euphorbia Fendleri T. & G.] 
On plains or prairies, Nebraska and Colorado to Texas, Mexico and Arizona. Spríng to fall. 
. 16. Chamaesyce adicioides Small. Perennial, shrubby, finely pubescent with pale 
hairs. Stems ascending, 2-4 dm. tall, rather copiously branched above, zigzag, sometimes 
lem. thick at the base: leaves numerous; blades ovate to oval, 2-3 mm. long, acute or 
acutish, entire, short-petioled : involucres campanulate, barely 1 mm. high, longer than 
the uncles, minutely pubescent, deciduous: glands about 0.4 mm. broad : appendages 
obsolete : capsules pubescent, less than 1 mm. long. 
In sand or coral rock, Florida. Spring to winter. S 
17. Chamaesyce lata (Engelm.) Small. Perennial, pale green, canescent. Stems 
branched from the Aste et vi e the branches ul or ascending, 5-10 cm. 
long: leaf-blades ovate to lanceolate, 5-10 mm. long, revolute-margined, abru tly m 
rowed, truncate or cordate at the base, short-petioled ; stipules obsolete, or of a few sho 
