CLASS XXI. ORDER VIII. 377 



smooth and shining on both sides, divided into narrow lobes, 

 which end in mucronated teeth, and are separated by wide and 

 rounded sinuses. The acorns are very large, and contained in a 

 remarkably fiat, superficial cup, the scales of which are so com- 

 pact as to produce a comparatively smooth surface. 



The foregoing species constitute a considerable portion of the 

 growth in the common woodlands of this vicinity. Their bark 

 is the chief material used in tanning, and is occasionally applied 

 in medicine to the purposes of an astringent and antiseptic. Next 

 to walnut, their wood is esteemed the best fuel, and large quan- 

 tities are consumed in town, brought from the south shore, the 

 Middlesex canal, and the adjacent country. 



QuERcus MONTANA. Willd. Rock Chcstiuf Oak. 



Leaves obovate, acute with large, nearly equal 

 teeth ; cup terbiuate, rough, acorii oblong. 

 Syn, QuERcus pkinus monticola. Mx. 



This species has more entire leaves than the o'hers here de- 

 scribed, being not sinuate, but edged with large, numerous, 

 roundish teeth. Its wood resembles that of the white oak in 

 strength, and its bark is in much request for tanning. — On rocky 

 hills in Hampshire county. Not often observed in the immedi- 

 ate vicinity of Boston. 



duERCus CHINQUAPIN. Ph. Dwarf Chesnut Oak. 



Leaves oti short petioles, obovate, acute at base, 

 largely toothed, pale underneath, teeth subequal, cal- 

 lous at tip; cup hemispherical, acorii ovate. 



A shrubby species, one of the smallest of our native oaks. — 

 Found at Attleboro', Mr. Emerson, and near Providence, Michaux. 

 Q,UERCus iLiciFOLiA, WUlcl. Skrub Oak or Scruh Oak. 



Leaves on long petioles, with five acute lobes, en- 

 tire at the margin, ash colored on the underside; cup 

 somewhat top shaped; acorn roiuidish. Mich. f. 

 sub. syn. 

 Syn. QuEKcus Banisteri. Mich. etf. 



The leaves of the shrub oak are small, commonly divided into 

 32* 



