(215) 



A shrub or small tree forming thickets. Bark light gray, 

 that of the trunks scaly, that of the young branches pu- 

 berulent : bud-scales dark brown and glabrous or puberu- 

 lent : petioles very short : blades obovate, 3-6 cm. long, obtuse 

 at the apex, acute at the base, rather thin, sinuately round- 

 lobed, sometimes entire or 3-lobed at the apex ; upper surface 

 pale bluish green and shining ; lower surface pale and some- 

 what silvery, finely stellate-puberulent : cup shallow, 12-14 

 mm. broad and about 6 mm. deep, covering one-fourth to 

 one-third of the acorn ; scales ovate, somewhat thickened on 

 the back; acorn barrel-shaped, about 1.5 cm. long and 1 cm. 

 in diameter. 



The description given above is that of the form occurring 

 in western Texas. The large tree of eastern Texas and the 

 lower Mississippi Valley, £)iiercus Durandii of Buckley, is 

 also included in this species by Sargent. I do not think that 

 the two can be regarded as one species ; they were regarded 

 as distinct by Buckley and by Young. As represented in 

 the Columbia herbarium J^. Durandii has narrower, more 

 entire leaves, which are thinner and more silvery beneath ; 

 the cup is much flatter, scarcely 4 mm. deep. The Columbia 

 herbarium has the following specimens of J2. breviloba. 



Texas : Howard's Spring, Bigelow (Mex. Bound. Surv., 

 type); Austin, 1883, S. B. Buckley; Dallas, Reverchon 

 (Curtiss' no. 2779*) ; Sutherland Spring, 25 miles southeast 

 of San Antonio, 1879, ■&• P a l> ner (oblanceolate leaves); 

 Austin, 1881,,/. H. Redfield. 



Illustrations: PL 30./. 1-2; Sargent, Silva N. Am. 



$L 384. 



16. Quercus pauciloba sp. nov. 



A tree about 4-5 m. high. Bark of the older branches 

 light gray, that of the young twigs light brownish, pubes- 

 cent : petioles .5-1 cm. long: leaf-blades broadly oval, ovate 

 or rarely obovate, 5-8 cm. long, 3-5 cm. wide, sinuately 

 5-7-lobed ; upper surface pale bluish green, in age gla- 

 brous, rather dull ; lower surface pale brownish, more or 

 less stellate-puberulent, strongly reticulate ; lobes broadly 

 triangular, short spinulose tipped, the larger sinuate-dentate : 

 cup hemispheric, 12-18 mm. in diameter; scales ovate, 

 acuminate, corky on the back ; acorn ellipsoid, or barrel- 

 shaped, sometimes 15 mm. long. 



