CUPULIFEKJE. 



SILVA OF NORTH AMERICA. 



75 



QUEROUS UNDULATA 



Scrub Oak. Shin Oak. 



Leaves oblong, sinuate-dentate, entire, pinnatifid, lobed or spinescent, blue-green, 



pubescent. 



Quercus undulata, Torrey, Ann. Lye. N. Y. ii. 248, t. 4 

 (excl. fruit) (1828) ; Marcy's Re]). 284 ; Bot. Mex. Bound. 

 Sitrv. 206. — Nuttall, Sylva, i. 8, t. 3 (excl. fruit). 



ercus undulata, ft obtusifolia, A. de CandoUe, Prodr. 

 xvi. pt. ii. 23 (1864). — Wenzig, Jahrh. Bot. Gart. Berlin^ 



iii. 199. 



Watson, Am. Nat. vii. 302 {Plants of Northern Arizona) Quercus undulata, y pedunculata, A. de Candolle, Prodr. 



(in part). — Engelmann, Trans. St. Louis Acad. ii. 384 



xvi. pt. ii. 23 (1864). 



(excl. a G^am5e?^^, /3 (?w7im5om),392 (inpart). — Wenzig, Quercus Emoryi, Porter & Coulter, Syn. FL Colorado^ 



Jahrh. Bot. Gart. Berlin^ iii. 199. — Greene, West Am. 



127 (not Torrey) (1874). 



Oaks^ 27 (in part), t. 13, f. 4; pt. ii. 65, t. 30. — Coulter, Quercus undulata, y Jamesii, Engelmann, Trans. St 



Contrib. U. S. Nat. Herb. ii. 415 {Man. PI. W. Texas) 



Louis Acad. iii. 382 (1876). 



(excl. var. Gicnnisoni). — Sargent, Garden and For est ^ Quercus undulata, S "Wrightii, Engelmann, Trans. St 



viii. 92. 



Lonis Acad. iii. 382 (1876). 



Quercus Pendleri, Liebmann, Oversigt Dansk. Vidensk. Quercus undulata, var. pungens, Engelmann, Trans. St 



Louis Acad. iii. 392 (1877) ; Rothrock Wheeler's Rep, 



Selsk. Forhandl. 1854, 170. — Orsted, Liebmann Chenes 

 Am. Trop. 22. — ^ Greene, West Am. Oaks, pt. ii. 67, t. 31. 



vi. 250. — Wenzig, Jahi^b. Bot. Gart. Berlin^ iii. 199. 



Quercus grisea, Liebmann, 0^67-5^^^ i)ans^. Vidensk. Selsk. Quercus undulata, var. grisea, Engelmann, Trans. St. 



Louis Acad. iii. 393 (1877). — Wenzig, Jahrb. Bot. Gart. 

 Berlin^ iii. 200. 

 Quercus undulata, var. oblongata, Engelmann, Rothrock 



Forhandl. 1854, 171. — Orsted, Liebmann Chenes Am. 



Troi?. 22. — Coulter, Contrib. V. S. Nat. Herb. ii. 415 



{Man. PL W. Texas). 

 Quercus pungens, Liebmann, Oversigt Dansk. Vidensk. 



m . 



Selsk. Forhandl. 1854, 171. — Orsted, Liebmann Chenes 

 Am. Trop. 22, (1869). —Greene, Fittonia, ii. 112. 



Quercus oblongifolia, Torrey, Bot. Mex. Bound. Surv. 

 206 (not Sitgreaves' Rep.) (1859). 



W, 



W( 



t. 27 (in part) (1889). 



This little Oak, which is widely distributed from the cliffs above 



of the Arkansas Ri 



in the eastern foothills of the Rocky Mountains in Colorado to western Texas, and through New Mexico 

 and Arizona to southern Utah and Nevada and to northern Mexico, is extremely variable in size and 

 habit, in the shape of its leaves, and in the size of its fruit. Usually a shrub, forming small thickets by 

 vigorous stolons, and with stout more or less contorted stems from two to eight feet tall, it rises only 



in the canons of some of the mountain ranges of southeastern Arizona to the height of twenty-five or 

 thirty feet, with a straight trunk from six to eight inches in diameter and scaly pale bark slightly 

 tino^ed with reddish brown .^ The slender branches, which are marked with pale lenticels, are coated, 



when they first appear, with dense hoary tomentum, and during their first winter are fight reddish 

 brown or ashy gray and pubescent or tomentose, ultimately becoming glabrous and dark brown or gray. 

 The buds are oval and about an eighth of an inch long, and are covered by a few thin fight red-brown 



often 



the margins with loose pale hairs 



The leaves are convolute in the bud, oblon 



& 



sinuate-dentate, entire, pinnatifid, lobed or spinescent, broad and rounded or cordate or rarely abruptly 

 wedge-shaped at the base, and usually acute or occasionally rounded at the apex ; when they unfold 

 they are coated with hoary tomentum, and at maturity they are thick and firm, fight blue-green, more 



Tourney, Garden and Forest, viii. 13. 



r. Havard (Proc. U. S. Nat. Mus. viii. 505) speaks of Quercus 



'.a as a small tree and the most abundant and characteristic 



of western Texas, but as he makes no mention of Quercus 



mm 



have confounded the two species. His collection preserved in the 

 National Museum contains specimens almost identical with the 

 fTTTio nf Oupr/'us nrlspfi. which is uow United with Quercus undulata. 



