BOTANY. 
175 
than the peduncles; glands transversely oval, with an entire or slightly crenate petaloid border, 
which is twice as broad as the gland itself; seeds obovate, somewhat rugose transversely, dull, 
gelatinous when moistened. In red sand and clay: with the preceding. Resembles the follow¬ 
ing, but more slender and of a more diffuse habit. It is readily distinguished by the broad 
petaloid appendages of the involucral glands. 
Euphorbia dilatata, (n. sp.): whole plant clothed with a soft pubescense; stem much branch¬ 
ing from a somewhat woody base, diffuse; leaves without stipules, opposite, ovate, sessile, 
dilated and somewhat unequal at the base, rather obtuse, entire, (often purplish underneath) 
thickish; involucres mostly solitary, axillary and terminal, nearly sessile, ovate; glands trans¬ 
versely linear-oblong, with a narrow petaloid crenate margin; capsule somewhat hairy; seeds 
oblong, even, gelatinous when moistened. Western Texas. Not uncommon in New Mexico. 
Resembles No. 1840 of Mr. Wright’s New Mexican collection, (1851-52); but that is hairy, 
the leaves are lanceolate, tapering to a mucronate tip, and the petaloid appendages of the invo¬ 
lucral glands are much broader. 
Euphorbia Fendleri, (n. sp.): branching and diffuse from a somewhat woody candex, smooth; 
leaves stipulate, opposite, broadly ovate or orbicular-ovate, on very short petioles, subcordate 
and oblique at the base; involucres solitary, on short peduncles; gland transversely oval, with 
a narrow entire somewhat 2-lobed border; capsule smooth; seeds obovate, a little rugose trans¬ 
versely, gelatinous when moistened. Big Springs of the Colorado; April. This species is No. 
800 of Fendler’s New Mexican collection. It is a small plant, throwing off many branches that 
spread on the ground, forming a little patch from three to six inches in diameter. The leaves 
are 3-4 lines long, and are often of a purplish tinge, especially underneath. 
SANTALACEiE. 
Comandra umbellata, Nutt. Gen. 1, p. 157. Gravelly soil. Big Springs of the Colorado, 
&c., Texas; April. 
SALICACEiE. 
Salix. Two undetermined species were found in the sand-hills of Llano Estacado. 
CUPULIFER2E. 
Quercus undue at a, Torr. in Ann. Lyc. New York , 2, p. 248, t. 4. Head-waters of the Colo¬ 
rado and Llano Estacado ; in sandy soil. In flower April 12. 
Quercus palustris, Du Roi. Near Fort Chadbourne, Texas. 
URTICACEiE. 
Parietaria Pennsylvanica, Willd? Delaware creek to the Pecos ; March. 
Celtis reticulata, Torr. in Ann. Lyc. New York , 2, p. 247. Upper Colorado, Texas; April. 
Planera Richardi, Michx. FI. 2, p. 248. Western Texas; April. 
Morus rubra, Linn.? Near Fort Washita; April. 
CONIFERS. 
Ephedra antisiphilitica, Berland.; Endl. Conif. p. 263. High rocky and sandy places; Llano 
Estacado and on the Pecos. The fertile aments are 1-2-flowered ; but usually perfect only one 
seed, which in that case is triangular. When two seeds ripen they are less angular, and the 
opposite faces are flat. The scales of the ament become fleshy at maturity. 
Juniperus Virginian a, Linn.; Michx. f. Sylv. 2, p. 253, t. 155. Head-waters of the Colorado, 
and in various parts of Western Texas. 
