CROTONS OF THE UNITED STATES. 67 
lanceolate, thin; petals none, glands large; stamens 10 to 
12, the filaments ciliate; pistillate racemes short, 2 to 3 
em. long, 1- to 3- or several-flowered; pedicels short, one 
fourth the length of the mature capsules; bracts small, 
broadly ovate; sepals ovate-oblong, obtuse; petals none; 
gland annular; styles 3, short, 1 to 1.5 mm. long, palmately 
3- to 4-cleft; capsules globose, trigastric, 1- to 3-seeded, 5 
to 6 mm. broad; seeds oval, 4 to 5 mm. long; caruncle 
stipitate, oblong. —Intergrades with C.. gracilis Kunth, of 
central Mexico.— Plate 28. 
Specimens examined from New Mexico (Thurber, no. 129. 1852; Pope, 
Junction of Delaware creek and Pecos river, 1855; Mulford, no. 102; 
Mearns, no. 158, Grant Co.; Wooton, no. 228, Las Cruces; Wright, nos. 
1800, 1801, in 1852); Texas (Wright, no. 642; El Paso; Bigelow and 
Parry, Frontera; Schott, higher locations between Eagle Pass and the 
Pecos, 1852; Croft, no. 205, 212, San Diego; Buckley, 1882; Duffy, 
Ft. Stockton, 1860; Havard, no. 34, Colorado City; Nealley, no. 
391459, Ballinger, and no. 460 — 463, Chenate; Sweedy, Tom Green 
Co.; Reverchon, no. 875 =“ Curtiss, no. 2525d,’’ Rocky hills and plains 
on the Colorado River, Kimble and Taylor counties; Pope; Bigelow, dry 
arroyo, opposite Presido del Norte, 1852, with staminate racemes 21 cm. 
long and linear leaves, is possibly a variety; Nealley, no. 460, Chenate, is 
quite similar. Avery small oval-leaved form collected “ on heights near 
the Pecos,’’ is possibly a variety) ; Mexico (Thurber, no. 810, Chihuahua; 
Berlandier, no. 3211, Nuevo Leon; Gregg, nos. 31, 59 and 375, Saltillo, 
no. 54, Buena Vista. From Dr. Gregg’s notes we learn that the bark of 
the root is used by the inhabitants as a purgative). 
B. Annual. 
C. Trexensis (Klotzsch) Muell. Arg. in DC. Prod. 157: 692. 
1866; Engelmann, Bot. Wheeler Exped. 243. 1878; 
Coulter, Synop. Flor. Colorado 126. 1874; Man. 
Bot. Rocky Mt. Reg. 325. 1885; Bot. West. Texas 
400. 1894; Chapman, Suppl. Fl. South. U. S. 
648. 1883; S. Watson in A. Gray, Man. Bot. 459. 
1890; Small in Britton and Brown, Il. Flor. U. 8S. and 
Can. 2:363. f. 2293.1897. C. muricatus, Nuttall in 
Trans. Am. Phil. Soc. n. s. 5:173. 1837; Torrey, 
Bot. U.S. and Mex. Bound. Surv. 195.1859. Hende- 
candra Texensis Klotzsch in Wiegmann, Archiv fir 
