(213 



Illustrations : PL 29. f. 1 ; Oersted, Liebm. Chenes Am. 

 Trop. -pi. 40. f. 2 ; Greene. West. Am. Oaks, //. 31 ; Sar- 

 gent, Silva X. Am. pi. 383. f. 6-8. 



13. Quercus Havardi sp. now 



A shrub often less than 1 m. high. Bark of young branches 

 brown, pubescent, with scattered lenticels ; that of the older 

 stems and branches dark brownish gray : bud-scales grayish 

 brown, pubescent : petioles short, 4-7 mm. long : leaf-blades 

 elliptic, oblong-oval or narrowly oblong-obovate in outline, 

 lobed half way to the midrib, thick and firm, pale bluish 

 green, shining and slightly stellate above, pale yellowish or 

 brownish, densely stellate and somewhat ferruginous beneath, 

 rather stronglv reticulate : lobes obliquely triangular, acute, 

 mucronate but not spinulose-tipped : fruit subsessile : cup 

 hemispheric, 18-25 mm. in diameter: outer scales ovate 

 and much corkv-thickened on the back, the inner lanceolate 

 and less thickened ; acorn spherical-ellipsoid, dark brown, 

 shining, 16-20 mm. broad and 2-2.5 cm - long. 



This species closely resembles J2>. Fcndleri in every re- 

 spect except the fruit, which is larger than in any other mem- 

 ber of the group and dark brown instead of yellowish. An 

 acorn of this species was collected by Dr. James and mixed 

 in with the type of J-?, undulata. Dr. Torrey figures it with 

 that species, but seems to have doubted its belonging there 

 from the beginning ; his notes to that effect are on the type- 

 sheet. As c^. undulata and J?. Havardi have the same habit 

 and the leaves of the latter have almost the same structure and 

 form, although deeper lobed, it is not strange that James con- 

 fused them. J^. Havardi grows on sandhills of the Staked 

 Plains. The large acorns are good to eat. 



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

 31 (type in Mo. Bot. Gard.) ; Camp near the Canadian 

 River, 1853, Bigelow (Whipple Exp.) ; James (Long's Exp., 

 fruit only). 



Illustrations: PL 29./. 2; Torr. Ann. Lye. N. Y. 

 pi. 4 (fruit only). 



14. Quercus obtusifolia (A. DC). 

 Quercus undulata ft obtusifolia A. DC. Prod. 16 "' : 23. 

 1864. 



