AMENTACEiE. 329 



HAB. Woods. Can. to 'Geor. W. to Miss/ May. . Qneof 

 the largest species of oak, sometimes attaining the height of 70 

 or 80 feet, covered- with* a dark coloured bark, from whence it 

 has derived its common name. It is highly valued on account 

 of its timber, as well as its bark. . Black Oak. Quercitron. 



8." Q. discolor Ait. : leaves oblong, pinnatifid-sinuate, pubescent be* 

 neath ; lobes oblong, toothed, setaceously mucronate ; cup turbinate ; 

 acorn ovate. 'Q. tinctoria sinuosa Mich.f. 



HAB. Forests. Penn, to Car. May. T? . A large tree, resembling 

 the preceding, and also Q. coccinea, but differs in having the 

 young leaves covered with down. It is still, however, doubtful 

 whether it is really distinct. 



ttt Leavbs deeply sinuate and lobed. 



9. Q. coccinea Wangh. : leaves on long petioles, oblong, deeply sinu- 

 ate, smooth ; lobes divaricate, dentate, acute, setaceously-mucronate ; 

 .cup turbinate, scaly ; acorn short, ovate. 



HAB. Fertile woods. N. Eng. to Geor. May. T?.-^A tree 70 80 



feet high. Distinguished by the brilliant red colour of its leaves 



' towards the close of autumn. Its -wood is used for staves and 



fuel. . Scarlet Oak. 



10. Q. rubra Linn. : leaves on long petioles, oblong, smooth, obtuse- 

 ly sinuate ; lobes father acute, toothed, setaceously mucronate ; cup 

 flat, nearly smooth ; acorn subovate. 



HAB, Forests.' Can. -to Geor. ! May. 1?. A tree from 70 80 

 feet high. Leaves- bright green ; sinuses large-, rounded. Re- 

 sembles the former, but its leaves are large, and in autumn thej 

 change to a dull red and finally become yellow. The acorn. also, 

 is larger, has a flat base and shallow cup. It is valuable both 

 for its wood and bark- '-., - ' Red Oak. 



11. Q. catesbati Mich. : leaves on short petioles, wedgeform at base, 

 oblong, deeply sinuate, smooth ; lobes 3 5, divaricate, dentate, acute, 

 setaceously mucronate ; cup turbinate, broad ; scales obtuse, those of 

 the margin bent inwards ; acorn subglobose. 



HAB. Pine barrens. Md. to Flor. May. T?. A shrub or small 

 tree, from 10 20 feet high, with an irregular stem and branches. 

 Leaves coriaceous and glossy. Cup large and remarkaole for its 

 obtuse scales. The wood makes excellent fuel, and its bark is 

 used by the tanner. Barren Scrub Oak. 



12.- Q.falcata Mich. ,-. leaves on long petioles, obtuse at base, tomen- 

 tose beneath, 3-lobed or sinuate ; lobes somewhat falcate, setaceously 

 mucronate, the terminal one long ; cup shallow, somewhat turbinate ; 

 acorn globose. Q. elongata Liifn.-, Q. rubra Walt. 



HAB. Sandy soil. N. J. to Geor. May; 1?. A tree 7080 



t feet high'. Leaves with 3- 5 'lobes, glossy on the upper surface. 



The wood is used for staves, fencing and fuel. The bark is 



highly esteemed by tanners. Spanish Oak. Red Oak. 



13. Q. palustris Mich. : leaves on long petioles, oblong, deeply sinu- 

 te, smooth ; axils of the veins villous beneath ; lobes divaricate, den- 



28* 



