406 CUPULIFERJE. (OAK FAMILY.) 



* # # Leaves deciduous, but rather coriaceous, mostly dilated upwards and obscurdj 

 lobed or entire in the same individual, sometimes more conspicuously lobed, ojlen more 

 or less bristle-pointed at the summit and extremities of some of the larger iv ///>\ 



11. <fc. Siquatica, Catesby. (WATER-OAK.) Leaves glabrous and shin- 

 ing, obovate-spatulate or narrowly wedge-form, icith a long tapering base, varying to 

 oblanceolate ; cup saucer-shaped or hemispherical, of fine and close scales, much 

 shorter than the globular acorn. Wet grounds, around ponds, &c., Maryland 

 to Virginia and southward. Tree 30 -40 high. Acorn ' long; the cup of 

 the same width. 



12. Q. Iilgra, L. (BLACK-JACK or BARREN OAK.) Leaves broadly wedye- 

 thaped, but mostly rounded or obscurely cordate at the base, widely dilated and 

 somewhat 3-lobed (rarely 5-lobed) at the summit, occasionally with one or two 

 lateral lobes or teeth, rusty-pubescent beneath, shining above, large (4'- 9' long) ; 

 cup top-shaped, coarse-scaly, covering half of the short ovoid acorn. (Q. fcrru- 

 ginea, Michx.) Dry sandy barrens, from Long Island, New York, to Illinois, 

 and southward. Tree 8 - 25 high. Acorn ' - f ' long. Leaves occasion- 

 ally rather deeply lobed, the lobes strongly bristle-pointed. Under the name 

 of Q. TRIDENTATA, Dr. Engelmann distinguishes a remarkable Oak, apparently 

 a hybrid between this and Q. imbricaria. Under this section the following re- 

 markable forms, by some regarded as species, would be sought, viz. : 



Q. LEANA, Nutt. (LEA'S OAK), of which single trees are known near Cin- 

 cinnati, Ohio, and Augusta, Illinois (Mead), is probably a hybrid between Q. 

 imbricaria and Q. tinctoria, or possibly Q. nigra. 



Q. HETEROPHYLLA, Michx. (BARTRAM OAK), was for it no longer exists 

 apparently a hybrid between Q. Phellos and Q. tinctoria ? 



# * * * Leaves deciduous, lobed or pinnatifid, long-petioled, the tips of the lobes bris^ 



tle-pointed. BLACK and RED OAKS. 

 *- Mature leaves downy underneath. 



13. Q. ilicifolia, Wang. (BEAR or BLACK SCRUB-OAK.) Dwarf; 

 leaves obovate, wedge-shaped at the base, angularly about 5-lobed, whitened-doicni/ un- 

 derneath ; cup flattish-top-shaped ; acorn ovoid. Sandy barrens and rocky hills, 

 New England to Ohio and W. Virginia. (Q. Banisteri, Michx.) A straggling, 

 crooked shrub, 3 - 8 high. Leaves 2' -4' long, thickish. Acorns barely ' 

 long. 



14. Q. falciita, Michx. (SPANISH OAK.) Leaves arayish-downy wider- 

 walk, obtuse or rounded at the base, 3 - 5-lobed above ; the lobes prolonged, n><>*tlij 

 narrow and more or less scythe-shaped, especially the terminal one, entire or spar- 

 ingly cut-toothed ; cup saucer-shaped ; acorn spherical or somewhat depressed (J' 

 long). Dry or sandy soil, from New Jersey and Penn. southward. A small 

 or large tree, extremely variable in foliage : a variety with shorter lobes is Q. 

 triloba, Willd. 



*- -*- Mature leaves glabrous on both sides or nearly so. 



+ Cup conspicuously scaly, more or less top-shaped or contracted at the base : acorn 

 one third or nearly half immersed. 



15. Q. tinctoria, Bartram. (QUERCITRON or BLACK OAK. YELLOW- 

 BARKED OAK.) Leave* more or iess rusty-pubescent n-hcn yoimgr, nearly glabn>tti 



