EUPHORBIA, SECTION TITHYMALUS. 123 
E. turipa Engelm. Proc. Amer. Acad. 5:1738. 1861; 
Boiss. DC. Prod. 157: 102. 1862. 
Stems several to many, 1.5 to 3 dm. high, rather strict. 
A few branches below the umbel; rays 12 to 20 mm. long, 
a few times branched; stem leaves close together, oblan- 
ceolate to obovate, sessile or subpetioled, almost always ob- 
tuse but with a small mucron, 8 to 15 mm. long, 3 to 5 
mm. wide; umbel leaves wider; floral leaves rotund to 
oblanceolate, more or less cuneate at base, mucronate; in- 
volucres 2 mm. long and slightly narrower, more or less 
hirsute inside ; lobes triangular ovate, hirsute ; glands trans- 
versely oblong, variable in shape, usually truncate, 1 to 2 
mm. long, .5 to 1 mm. wide, short stipitate; fifth gland 
replaced by a lobe similar to the other lobes but smaller ; 
bracts 5 or more, large, lacerate or entire, hirsute, attached 
to the side of the involucre below; stamens many; capsule 
3 mm. in diameter, slightly wrinkled; pedicel 5 to 8 mm. 
long; styles .5 mm. long, united at the base, bifid above; 
stigmas capitate; seeds cylindrical ovoid, flattened at the 
ends, 2.4 mm. long, 1.8 mm. wide, 1.4 mm. thick, promi- 
nently pitted, the pits tending to be circular and in rows; 
caruncle small, conical, chalazal space large and depressed, 
raphe prominent. — Mountains of Arizona and adjacent 
parts of Utah and New Mexico. — Plate 38. 
Specimens examined from New Mexico (Wooton, Horse Camp, 350, 
1892; Palmer, 57, 1869; Vasey, Santa Magdalena Mts., 23, 1881); Utah 
(Palmer, St. George, 441, 1877, with long stems covered with small ob- 
ovate, obtuse leaves; Parry, 1874); Arizona (Palmer, 512, in part, 1876; 
Newberry, near Leroux Spring, 1858: Anderson, Bill Williams Mt., 
1864). 
Var. Prineter (Engelm.) n. comb. . Pringlei Engelm. 
Patterson, Check-list 115. 1887. (name only). Z. 
montana Rose, Contr. Nat. Herb. 1: 125. 1891. 
Umbel more branched, the branches spreading; stem 
leaves oblanceolate spatulate, usually acute, 10 to 25 mm. 
long, 3 to 6 mm. wide; petioles very short to 2 mm. long; 
figral leaves rhombic ovate, 8 to 12 mm. wide, 6 to 10 mm. 
39 
