206 i UNITED STATES AND MEXICAN BOUNDARY, 
QUERCUS COCCINEA, var.? MICROCARPA: foliis oblongis profunde sinuato-pinnatifidis utrinque 
glabris nitidisve, sinubus obtusis, lobis (utrinque 2—3) parce dentatis, dentibus setaceo-acuminatis ; 
fructibus solitariis geminisque, glande oblongo-ovata apiculata. Rocky ravines near the mouth 
of the Pecos, and on the Limpio: Bigelow. Oak Creek, Texas; Schott. Differs from the 
common state of Q. coccinea in the considerably smaller and less lobed leaves, in the acorns 
being scarcely one-third as large, the cup not turbinate, and the gland longer in proportion to 
its breadth. 
Quercus NIGRA, Linn. ; Micha. f. Sylv. 1,4. 20; Torr. Fl. N. York, 2, p. 188, t. 105. Medina 
Creek, above San Заа Texas; Parry. This appears to be the western limit of the Black- 
Jack Oak. r 
_, QUERCUS OBTUSIFOŁTA, var.? BREVILOBA: foliis subcoriaceis obovato-oblongis basi cuneatis, lobis 
| ғ brevibus obtusis supra viridibus subtus pallidis pubescentibus; fructibus sessilibus solitariis vel 
^^^geminis, cupula depressa hemispherica, glande oblongo-ovato obtusa.—Mountain gorges near 
E v. 
7 wv 
Howard's Springs, western Texas ; Bigelow. We refer this oak to Q. obtusifolia with much 
doubt, but it seems more nearly allied to that species than to any other. It differs, however, in 
its leaves being much smaller and far less lobed, more coriaceous and apparently evergreen. 
The acorns, too, are smaller and the cup more shallow. 
Quercus UNDULATA, Torr. in Ann. Lyc. N. York, 2, p. 248, t. 4; Ё in Marcy’s Rep. p. 297. 
Q. Fendleri, Liebm. 1. c. p. 110.—New Mexico, near the Rio Grande. (No. 805 and 807, Fendl. 
N. Mex. Coll.) 
Quercus vIRENS, Ait.; Micha. f. Sylv. 1, p. 57, t. 12. Moist woods on the Gulf coast from the 
Brazos to the Rio Grande, also along the latter river as high as the Pecos and Live Oak Creek. 
At a distance from the coast it is commonly a shrub 4—6 feet high. The leaves vary from nar- 
rowly oblong to broadly ovate. On old trees they are mostly entire, but on young өледі Pad 
are often sharply toothed. а Ло аён 
Quercus Емовү, Torr. in Emory’s Rep. р. 152, 4.9. Q. pungens, k Q. hastata, Lien. l. c. 
р. 171. Near the mouth of the Pecos and on the Limpio, Texas; Bigelow, Parry. Chihuahua; 
Thurber. Sonora; Schott & Capt. E. K. Smith.—A widely spread shrubby evergreen oak, with 
neat foliage and very small acorns. The small-leaved oak of Frémont, quoted by Liebmann 
under his Q. chrysolepis, seems to be a variety of this species. No. 664, Wright, belongs to the 
form called Q. pungens by Liebmann, in which the leaves are more deeply toothed or lobed 
than in the normal state, 
QUERCUS AGRIFOLIA, Née in Ann. de Cienc. Nat. 3, p. 281, fide Liebm.; Hook. Ic. 3, t. 877. 0. 
oxyadenia, Torr. in Sitgr. Rep. t. 11, & Bot. Whippl. Rep. p. 138. Common on the mountains 
of California, from the Upper Sacramento to the southern boundary line; Parry. East of San 
Diego Dr. Parry saw trees of this oak which were 30 or 40 feet high. When growing singly, 
it has a round top like the Live Oak, throwing out branches a few Ted from the Cun and 
extending 30 feet or more from the trunk. 
QUERCUS OBLONGIFOLIA, Torr. in Sitgr. Rep. р. 113, t. 19. Q. grisea, Liebm. l. c. p. 171. 
Mountains of the Limpio, Texas (Bigelow), and westward to the range east of San Diego, Cali- 
fornia; Parry. In Texas and western New Mexico this oak is commonly a shrub 6—15 feet 
high; but in California it sometimes attains the height of 20 or 30 feet. It has pale bark and 
spreading ке The acorns vary considerably in form. To this species I ma Be: 665 
and 1866, W | 
