120 



coming grey in the second year, numerous small lenticels (evi- 

 dent when not covered with pubescence) ; buds 1.5 x 3 to 4 mm., 

 oblong to acutely ovoid, glossy brown, the scales ciliate; leaves 

 deciduous, stiff, coriaceous, dull green, not becoming crimson 

 in autumn, broadly lanceolate to acutely ovate, often long at- 

 tenuate (by the elongation of the terminal lobe), rounded at 

 the base, frequently broadly cuneate, truncate, or even shal- 

 lowly cordate, setaceously 8-toothed, the terminal pair often so 

 reduced as to become a part of the terminal lobe, with deep 

 rounded sinuses, usually unequally lobed, moderate in size (2.5 

 to 5 x 6 to 11 cm.), fascicled hairs persistent especially above 

 and along the midrib beneath, frequently one or two denser 

 axillary tufts beneath; veins branching but hardly looped, 

 scarcely raised above but prominent beneath, usually alter- 

 nately passing into the lobes; petiole slender (0.5 to 1 x 10 to 

 20 mm.), stiff, stellate hairy or finally glabrate, dark red at the 

 base shading into straw color above, dorsally flattened ; cat- 

 kins ? ; fruit biennial, solitary, or, if paired, one usually not devel- 

 oping fully, the mature fruit borne on a short peduncle (2.5 x 5 

 or 6 mm.) or subsessile; cup small (about 12 mm. in diameter 

 and 8 mm. in depth); scales thin, apressed, somewhat elon- 

 gated and narrowly rounded at the apex, light brown, ciliate, 

 and densely pubescent dorsally with silvery white hairs which 

 are readily rubbed off ; acorn oblong, almost cylindrical, broadly 

 rounded at the apex, about 8 to 10 x 17 to 22 mm., finely dense 

 pubescent, with longitudinal dark markings, one third or more 

 included. 



A large tree with low, wide spreading main branches, stiff 

 young branches, and dark grey or black bark roughly furrowed, 

 the trunk as large as 1 m. in diameter, the crown about 10 to 

 12 m. high and about 15 m. broad. 



The type (Mueller no. 567) was collected August 25, 1933 

 in very moist Oak Canyon in the Chisos Mountains at an alti- 

 tude of about 4200 feet and is deposited in the herbarium of 

 the University of Texas at Austin. 



Quercus graciliformis Mueller, sp. nov. Ramuli gracillimi 

 mox glabrati; gemmae 1-1.5 mm. crassae 1.5-2 mm. longae 

 ovoideae; folia decidua anguste lanceolata, 2.5 cm. lata, 8 cm. 

 longa, basi cuneata, mox glabrata, rariter in axillis venarum 

 subtus pilosa, dentibus 8-10 setaceis; petioli glabrati 0.5 mm. 



