Vor. II.] SPURGE FAMILY. 373 
7. Euphorbia glyptospérma Engelm. Ridge-seeded Spurge. (Fig. 2313.) 
Euphorbia glyptosperma Engelm. Bot. Mex. Bound. 
Surv. 187. 1859. 
Annual, pale, green, glabrous. Stem branched 
toward the base, the branches ascending, spread- 
ing or prostrate, 2’-15’ long; leaves oblong, 
linear-oblong or rarely ovate, 1/’-6’’ long, more or 
less falcate, obtuse at the apex, inequilateral, 
serrulate, very oblique and obtuse or subcordate 
at the base, short-petioled; stipules becoming a 
fringe of setae; involucres solitary in the axils, 
often clustered, campanulate, '3/’ long, with 4 
dark ribs and 4 saucer-shaped glands, their ap- 
pendages narrow, crenulate, or slightly lobed; 
capsule depressed-globose, less than 1// in diame- 
ter, nodding; seeds oblong, 14’/ long, ash-colored, 
strongly transversely wrinkled, not pitted. 
In sandy soil, Ontario to British Columbia, south 
to Connecticut, Texas and Mexico. June-Oct. 
8. Euphorbia maculata l,. Milk Purslane. 
Spotted or Blotched Spurge. (Fig. 2314.) 
Euphorbia maculata ¥,. Sp. Pl. 455. 1753: 
Annual, dark green, puberulent or pilose. 
Stem branched from the base, the branches slen- 
der, radiately spreading, prostrate, 2’-15/ long, 
often dark red; leaves usually blotched, oblong or 
ovate-oblong, 2/’-8’” long, obtuse, more or less 
serrate, short-petioled, the base oblique, subcor- 
date; stipules a fringe of setae; involucres solitary 
in the axils, entire, %4/’ long, with 4 cup-shaped 
glands, the appendages narrow, white or red, cren- 
ulate; peduncles shorter than the involucres; cap- 
sule ovoid-globose, about 1/’ in diameter, pubes- 
cent; seeds ovoid-oblong, obtusely angled, ash-col- 
ored, minutely pitted and transversely wrinkled. 
Throughout North America, except the extreme 
north. Apparently introduced west of the Rocky 
Mountains. June—Nov. 
g. Euphorbia humistrata Engelm. Hairy Spreading Spurge. (Fig. 2315.) 
Euphorbia humistrata Engelm.; A. Gray, Man. Ed. 
2, 386. 1856. 
Annual, light green, puberulent or sparingly 
pilose. Stem branched from the base, the slen- 
der branches radiately spreading, prostrate or 
ascending, 4’-12’ long; leaves ovate-oblong or 
oboyate-oblong, or sometimes narrower, 2//—7’/ 
long, serrulate, at least above the middle, 
oblique, obtuse or subcordate at the base, short- 
petioled; stipules at length fringed; involucres 
in lateral clusters, split on one side, 4/’ long, 
faintly nerved, with 4 disk-like glands, each 
subtended by a narrow irregular red or white 
appendage; capsule depressed-globose, less than 
1’/ in diameter, its 3 lobes keeled; seeds oblong, 
¥4/ long, papillose, ash-colored, obscurely trans- 
versely wrinkled. 
Quebec to New York, Kansas and Mississippi. 
Aug.-Oct. 
