BOTANY. pis 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. 
EvpHorBia 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. 
Evpnorsia Fenpiert, (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. 
SANTALACE. 
CoMANDRA UMBELLATA, Nutt. Gen. 1, p. 157. Gravelly soil. Big Springs of the Colorado, 
&c., Texas ; April. 
SALICACEA. 
Satrx. ‘Two undetermined species were found in the sand-hills of Llano Estacado, 
CUPULIFER. 
Quercus unpuLata, Zorr. 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. 
URTICACEA. 
Parrerarta Pennsyivantca, Willd? Delaware creek to the Pecos; March. 
Crum RevicuLata, Torr. in Ann. Lyc. New York, 2, p. 247. Upper Colorado, Texas; April. 
Pranera Ricuarvt, Miche. Fl. 2, p. 248. Western Texas; April. 
Morus rusra, Linn.? Near Fort Washita; April. 
CONIFER. 
Epnepra antisrpniiimca, 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 7 
opposite faces are flat. The scales of the ament become fleshy at maturity. 
Junrperus Virerrana, Linn.; Miche. f. Sylv. 2, p. 253, t. 155. Head-waters of the Colorado, 
and in various parts of Western Texas. 
