188 



CUPULIFEILE. 



QUERCUS. 



ft Leaves toothed or lobed. 



2. Q-uercus nigra, Linn. (Plate CV.) Black Jack Oak. 



Leaves coriaceous, obtusely cuneate, dilated and retusely 3-lobed above, the lobes mucronate 

 when young, rusty-pulverulent underneath ; nut roundish-ovoid, nearly half immersed in the 

 turbinate cup. — Linn. sp. 2. p. 995 ; Michx. Querc. t. 22 - 23, and fl. 2. p. 198 ; Pursh, 

 fl. 2. p. 629 ; Ell. sk. 2. p. 60 ; Torr. compend. p. 357 ; Beck, bot. p. 328. Q. ferruginea, 

 Michx. sylv. 1. t. 20. 



A tree 10-25 feet high, with a trunk 4-8 inches in diameter, with spreading crooked 

 branches and a rough blackish bark. Leaves 3-4 inches long (on young sprouts much 

 larger), smooth, shining and dark green above, sprinkled with very minute rusty-colored scales 

 underneath ; the lower part cuneate, but usually obtuse or even slightly cordate at the base ; 

 the summit dilated and obtusely 3- or sometimes 5-lobed : lobes in the young leaves tipped 

 with a short bristle. Acorn of middle size : scales of the cup closely appressed : nut rather 

 dark brown. 



Sandy soils, Hempstead Plains, Long Island. Fl. April - May. Fr. October. The 

 wood of this tree is compact ; but in consequence of its small size, it is of little value as 

 timber. When of sufficient size, it is much esteemed for fuel. In the city of New-York, it 

 often occurs among the oak wood brought from New-Jersey, in the pine region of which it is 

 abundant. 



3. Quercus tinctoria, Bartram. Black Oak. Quercitron. 



Leaves moderately lobed, somewhat rusty-pubescent underneath (particularly in the axils), 

 obtusely sinuate, mucronate ; nuts ovoid -globose, nearly one-third immersed in the thick 

 turbinate cup. — Bartr. trav. p. 37 ; Michx. Querc. t. 24 - 25, and ft. 2. p. 198 ; Pursh, 

 ft. 2. p. 629 ; Bigel. fl. Bost. p. 350 ; Ell. sk. 2. p. 601 ; Michx. f. sylv. 1. t. 24?;* Torr. 

 compend. p. 357 ; Beck, bot. p. 328 ; Darlingt. fl. Cest. p. 531. Q. discolor, Willd. sp.4. 

 p. 444 ? 



Trunk 50 - 80 feet high and 2-4 feet in diameter, with rough blackish bark. Leaves 

 5-8 inches long and 3-5 inches wide, obovate, more or less deeply lobed, but usually not 

 half way to the midrib, with the lobes somewhat toothed and setaceously mucronate when 

 young, clothed with rusty pubescence underneath, which, however, mostly disappears by 

 midsummer, except in the axils of the veins : petioles 1-2 inches long. Acorns on very 

 short peduncles. Cup abruptly contracted at the base ; the scales distinct, but pretty closely 

 pressed. Nut rather small, brownish, often nearly globose, somewhat depressed at the 

 summit. Kernel yellowish. 



Woods ; common. Fl. May. Fr. October. I have not found the leaves of this oak so 



* The acorns of this plate belong to the Scarlet Oak, and those of plate 25 to the Black Oak. (See N. Amer. Sylv. 

 pp. 94 <f- 97.) 



