406 CUPULIFEE^. (oak family.) 



* * * Leaves deciduous, but rather coriaceous, mostly dilated upwards and obscurely 

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

 or less bristle-pointed at the summit and extremities of some of the larger veins. 



11. Q. aqudtica, Catesby. (Watee-Oak.) Leaves glabrous and shin- 

 ing, obovate-spatulate or narrowly wedge-form, with a long tapering base, var)'ing to 

 oblanccolate ; 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. nigra, L. (Black-Jaok or Baeken Oak.) Leaves broadly ivedge- 

 sliaped, 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. fen-u- 

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

 and southward. — Tree 8° -25° high. Acorn J'- §' long. Leaves occasion- 

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

 of Q. tkidentXta, 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. LiANA, 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. (Barteam Oak), was — for it no longer exists 

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



* * * * Leaves deciduous, lobed or pinnatifd, long-petioled, the tips of the lobes briS' 



tie-pointed. — Black and Red Oaks. 

 ■»- Mature leaves downy underneath. 



13. Q. ilicifolia, "Wang. (Beae or Black Sceub-Oak.) Dwarf; 

 haves obovate, wedge-shaped at the base, angularly about 5-lobed, whitened-downy un- 

 derneath ; cup flattish-top-shaped ; acorn ovoid. — Sandy baiTens and rocky hills. 

 New England to Ohio and W. Virginia. (Q. Banisteri, Michx.) — A sti-aggling, 

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

 long. 



14. Q. falcata, Michx. (Spanish Oak.) Leaves grayish-downy under- 

 neath, obtuse or rounded at the base, 3 - 5-lobed above ; tlie lobes prolonged, mostly 

 nairow 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. 



-I- -1- 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. <^. tinctoria, Bartram. (Queecitkon or Black Oak. Yellow- 

 barked Oak.) Leaves more or less rusty-pubescent when young, nearly glabrous 



