EUPHORBIA, SECTION TITHYMALUS. 115 
Illinois (Hall, Athens); Wisconsin (Trelease, Madison, 1882; Kellerman, 
Oshkosh, 1878) ; Ontario (Macoun, Ottawa, 1892) ; Nova Scotia (Burgess, 
Pictou, 1883); Ohio (Spence, Springfield, 1879; Mosely, Sandusky, 
1895) ; Alabama (Mohr, Mobile, 8); Iowa (Reppert, Muscatine). 
Also reported from Rhode Island (Tweedy, Bull. Tor. Bot. Club 9: 
23. 1882; San Bernardino, Cal. (Parish, Erythea 8:61); and Monterey 
and San Francisco, Cal. (Hook. & Arn. Bot. Beechey’s Voy. 159, perhaps 
E. crenulata). 
== Capsule smooth or with very slight ridges on the back of the 
cocci. 
E. PEPLIDION Engelm. Mex. Bound. 2!: 191. 1859; Boiss. 
DC. Prod. 15?: 142. 1862; Coulter, Bot. West. Tex. 
394, 1894. — Boiss. Icon. Euph. pl. 9.3. 
Stems erect, 1 to several from buds at the crown, slender, 
striate, 5 to 20 cm. high, a few branches just below the 
umbel; rays 3, 1 to 2 cm. long, a few times dichotomously 
branched; stem leaves linear cuneate, obtuse or the upper 
sometimes acute, tapering to a petiole, close together on 
the stem, 5 to 20 mm. long, 1 to 4 mm. wide; umbel 
leaves linear or lanceolate or spatulate, dilated at the base, 
12 to 20 mm. long; floral leaves rhomboid lanceolate to 
ovate, falcate, acute, somewhat erose margined ; involucre 
broad turbinate, less than 1 mm. high; lobes deeply cut, 
dentate, obovate, ciliate; glands stipitate, .2 mm. long, .5 
mm. wide, horns much longer ; bracts very small or obsolete, 
a tuft of hairs at the apex; stamens 5 to 10; capsules de- 
pressed globose, 2 mm. high, 8 mm. broad, smooth; cocci 
flattened on the back; sulci deep; styles .5 mm. long, 
free or nearly so, divided almost to the base; seeds oblong, 
diagonally truncate above, subhexagonal, 1.3 mm. long, .9 
mm. wide, the inner faces with one large depression each, 
the four outer with 2 to 3 depressions each, or these some- 
times irregularly arranged; chalazal depression large; 
caruncle flat, umbonate, bilobed. — Sandy and stony places 
in central and southern Texas. — Plate 31. 
Specimens examined (Wright, Austin, 1850, east of the San Pedro, 
1823, 1851; Hall, Austin, 557, 1872; Reverchon, Upper Concho, 136, 
1354, 1882; Berlandier, 1664; Croft, San Diego, 74, 1885, the stem 
winged; Reverchon, Sabinal, 141, 1885). a 
