534 MONOECIA POLYAND1UA 



7. Q. alba, L. Leaves obovate-oblong, nearly equally pinnatifid- 

 sinuate, the segments oblong, obtuse, mostly entire ; cup hemispherical, 

 tuberculate ; nut ovoid-oblong. Becky Bot. p. 329. Icow, JMx. f. 

 Sylva, 1. tab. 1. 

 White Quercus. Vxtlgo — Common White-Oak. 



Stem 60 to 80 and 100 feet high, and 2 to 1 or 5 feet in diameter, branched above, 

 clothed with a whitish or grey bark. Leaves 4 to G inches long, and 2 to 4 Inches 

 wide, subcoriaceous, smooth, shining green above, paler and somewhat glaucous 

 beneath (pubescent beneath when youn-;), deeply and nearly equally pinnatifid 

 (sometimes cuneate and 3-lobed) ; tegmenta usually 3 or 4 on each side, 1 io 2 

 inches long, and half an inch to an inch wide, oblong, obtuse, entire, or occasion- 

 ally sublobod at apex ; petioles half an inch to an inch long, smooth. Acorn rather 

 large, o?0id*oblong, In a bowl-shaped or hemispherical cup t which is pubescent, 

 and rough, externally, with roundish tubercles,— the fruit generally in pairs on a 

 Qommon peduncle about half an inch long. 



Hub. Woodlands: very common. FL May. Fr. October. 



Obs. This is one of our finest and most valuable forest trees ; and frequently 

 attains an immense size. Its prevalence, however, is not so Indicative of a good 

 soil, as that of the Q. tinctoria, or Black Oak- The wood is firm and durable, 

 though somewhat liable to warp or spring. It is extensively used in the mechanic 

 arts,— especially by the Shipwright, the Mill-wright, and the Wheelwright. 

 Tha bark is astringent and tonic ; and is frequently employed in medical practice. 

 The acorns are sweet, affording a nutritious and favorite food of hogs. On young 

 trees, the leaves are remarkably persistent, after they are killed by the frost, in 

 autumn. 



j* + Leaves coarsely dentate, — not lobed. 



8. Q. BicoLoit, Willd. Leaves oblong-ovate, acute, softly lomentose 



beneath, coarsely and unequally dentate, the teeth rather acute ; fruit 



on long peduncles ; cup hemispherical ; nut ovoid-oblong. Beck, 



Hot. p. 331. 



Q. alba palustris 1 Marsh, Jlrbxtst. p. 120. 



Q. Prinus, var. tomentosa. JMx. Jim, 2. p. 190. 



Q. Prinus discolor. JMx. f. Sylva, 1. p. 47. Icon, tab. 7. 



Two-colored Qusrcus. Vulgo — Swamp White-Oak. 



Stem 40 to 60 or 70 feet high, and 2 to 3 feet in diameter, with numerous spread- 

 ing branches, and a scaly light-grey bark. Leaves 4 to 6 or 8 inches long, and I 

 or 3 to 5 Inches wide, varying from broad-ovate to oblong, acute, cuneate and entire 

 at base, with coarse unequal teeth above, which are dilated at base, and rather 

 acute and callous at apex, the upper surface smooth, clothed with a soft velvetty 

 tomentum beneath, which is whitish, or cinereous, sometimes pale olive, or 

 greenish ferruginous ; petioles half an inch to 3 quarters in length. Acorn rather 

 large, ovoid-oblong, In a roughish scaly pubescent bowl-shaped ct/p, the margin 

 dentate with the points of the scales; the fruit in pairs (or often single) on an 

 axillary common peduncle 1 or 2 to 4 inches long. 



Hob. Low grounds; along streams: frequent. Fl. May. /V.October. 



Obs. There appears to be two or three varieties of this ; but they are all 

 much less esteemed than several of the other species. 



9. Q. Piuxus, L. Leaves obovate and elliptic-oblong, acute, or acu- 

 minate, finely pubescent beneath, coarsely and nearly equally sinuate- 



