(2i 4 ) 



£>iicrcus undulata Sargent, Silva N. Am. 8: 75, in part. 

 1895. 



A shrub 2-4 m. high. Bark of the stems gray, that of the 

 young branches brownish and pubescent: bud-scales brown, 

 hairy when young : petioles short, 5—10 mm. long : leaf- 

 blades broadly obovate in outline, rounded at the apex, ob- 

 tuse or rounded at the base, sinuately round-lobed, very firm, 

 3-7 cm. long; those of the young shoots more elongated and 

 deeper lobed ; upper surface pale bluish green, shining, 

 when young sparingly stellate-puberulent ; lower surface 

 pale, brownish, densely stellate and somewhat ferruginous : 

 cup 15-18 mm. in diameter, hemispheric ; acorn ellipsoid, 

 dark brown, about 1.5 cm. broad and 2 cm. long. 



The leaves of this species most resemble those of Q 

 breviloba but are broader, and with a different texture and 

 pubescence, which are like those of the leaves of J^. Fcndleri 

 and J^J. Havardi. The cup is that of J^. Fendleri, but larger 

 and the acorns resemble those of J^. Havardi but are some- 

 what smaller. Alphonse DeCandolle made it a variety of 4L- 

 undulata but we must remember that his 4L undulata was not 

 that of Torrey, but is J^. Fendleri Liebm. J^. obtusifolia 

 grows on hills and mountains of Texas, New Mexico and 

 Arizona. 



New Mexico: Mountains about Santa Fe, 1847, Fend- 

 ler, 80 y (type) ; Wright, 666 (in part). 



Texas: Sandhills of the Staked Plains, 1881, Dr. V. 

 Havard, 32 (in part). 



Arizona : 1869, Dr. E. Palmer. 



Illustrations: PL 29. f. 3-4; Sargent, Silva N. Am. 

 $L 383, f. 13. 



15. Quercus breviloba (Torr.) Sarg. Gard. & For. 8 : 93. 



1895. 



£>tiercus obtusifolia var. ? breviloba Torr. Bot. Mex. 

 Bound. Surv. 206. 1859. 



JQuercus San Sabeana Buckley; Young Fl. Texas, 507. 



1873. 



Quercus Durandii var. San Sabca Buckl. Bull. Torr. 



Club, 10 : 91. 1883. 



