374 



EUPHORBIACEAE. 



[Voi,. II. 



10. Euphorbia stictospora Engelm. 

 Narrow-seeded Spurge. (Fig. 2316.) 



Euphorbia stictospora Engelm. Bot. Mex. Bound. 

 Surv. 187. 1859. 



Annual, yellowish green, pilose throughout. 

 Stem branched from the base, the branches as- 

 cending, or radiating, 2 / -i2 / long; leaves oblong 

 to suborbicular, 2 // ~3 // long, obtuse, dentate-ser- 

 rate at the apex, short-petioled, the bases truncate 

 or subcordate; stipules fringed; involucres clus- 

 tered, campanulate, >" high, with 4 cup-shaped 

 glands subtended by inconspicuous crenate ap- 

 pendages; peduncles at length longer than the 

 involucres; capsule ovoid, #"-l" in diameter; 

 seeds narrowly ovoid, %" long, pointed, pitted, 

 gray or ash-colored, sharply 4-angled. 

 Kansas and Colorado to Mexico. June-Oct. 



ii. Euphorbia Fendleri T. & G. 



Euphorbia Fendleri T. & G. Pac. R. R. Rep. 



3: 175- 1855. 



Annual (or perennial by a woody root), 

 pale green, glabrous. Stem diffusely 

 branched from the base, the spreading 

 wiry branches 4 / -8 / long, brittle; leaves 

 suborbicular, oval or elliptic, 1%"-$" 

 long, obtuse, entire, short-petioled, the 

 base oblique, obtuse or subcordate; stipules 

 usually a fringe 'of short setae; involucres 

 solitary in the axils, sometimes clustered 

 toward the ends of the branches, cam- 

 panulate, i"-2#" high, with 4 or 5 

 saucer-shaped oval glands subtended by 

 irregular entire or slightly lobed append- 

 ages; peduncles about as long as the in- 

 volucres, capsule deflexed, i#" in diame- 

 ter, sharply 3-lobed; seeds ovoid, %" long, 

 transversely wrinkled. 



Nebraska and Colorado to Texas, Mexico 

 and Arizona. April-Oct. 



Fendler's Spurge. (Fig. 2317.) 



12. Euphorbia lata Engelm. Hoary 

 Spurge. (Fig. 2318.) 



Euphorbia lata Engelm. Bot. Mex Bound. Surv. 



1 88. 1859. 



Perennial, pale green, canescent all over. 

 Stem branched from the somewhat woody base, 

 the branches spreading or ascending, 2 / -4 / long; 

 leaves ovate to lanceolate, 2^ // -5 // long, revo- 

 lute-margined, abruptly narrowed, truncate or 

 cordate at the base, short-petioled; stipules ob- 

 solete, or of a few short setae; involucres solitary 

 in the axils, l /i" long, short-peduncled, bearing 

 5 disk-like glands subtended by narrow undulate 

 appendages; capsule subglobose, i" in diameter; 

 seeds oblong, % ff long, acutish at both ends, 

 4-angled, the faces inconspicuously transversely 

 wrinkled. 



Kansas to Texas and New Mexico. 



