MONOECIA POLYANDRIA* 439 



H .\ rt Woods. A *a?getree; Leaves bright g^een ; -rup nn</> r>-r>n.. 



?calcs. 

 U.- rubra : leaves long-petiolate, smooth, obtusely sinuate ; lobes rathe; 



acute, dentate, setaceously mucronate ; cup flat, nearly smooth ; acorn 



subovate. 

 HAB, Woods. A large tree ; leaves bright green; sinuses large, 



rounded. 

 Q,. palustris : leaves on long petioles, oblong, deeply sinuate, smooth ; 



axils of the veins villous beneath ; lobes divaricate, dentate, acute. 



setaceously mucronate ; cup flat, smooth ; acorn subglobose. 

 HAB. Wet woods. A large tree ; acorns small, abundant. 

 d. bannisteri : leaves on long petioles, obovate, cuneiform, 3 5-lobed, 



entire on the margin, grayish-tomentose beneath ; lobes setaceously 



mucronate ; cup subturbinate ; acorn subglobose. 

 HAB. Sandy fields and mountains. Shrub 4 6 feet high; a\irns 



abundant. 



* * Fructification annual ; fruit pedunculate ; leaves awnless. 



Q,. alba : leaves oblong, pinnatifid-sinuate, pale or pubescent beneath ; 

 lobes oblong, obtuse, mostly entire; cup deep, tuberculate, acorn ovate. 



HAB. Woods. A very large tree ; barkichite; leaves pub es. beneath 

 when young. 



d. prinus : leaves on long petioles, obovate, acute, pubescent beneath, 

 coarsely toothed ; teeth unequal, dilated, callous at the tip ; cup deep, 

 attenuate at the base ; acorn ovate. 



HAB. Shady woods. A large tree. 



Q,. bicolor : leaves on short petioles, oblong-obovate, whitish tomentose 

 beneath, coarsely toothed, entire at the base, teeth unequal, dilated, 

 rather acute, callous at the tip ; fruit in pairs on long peduncles ; cup 

 hemispherical ; acorn oblong-ovate. 



HAB. Woods. A large tree ; pedunc. long and slender ; acorn pu- 

 bescent. 



Qi. montana : leaves on petioles of middling length, broad-obovate, ob- 

 long, white-tomentose beneath, shining above, coarsely toothed, ob- 

 tuse and unequal at the base ; teeth subequal, very obtuse ; fruit in 

 pairs, on short peduncles ; cup hemispherical ; scales tuberculate and 

 rugose ; acorn ovate. 



HAB. Rocky woods and mountain sides. A large tree ; fr. middle- 

 sized. 



Q,. castanea: leaves on long peduncles, oblong-lanceolate, obtuse at 

 the base, acuminate, tomentose beneath, coarsely toothed ; teeth sub- 

 equal, dilated, obtuse ; cup hemispherical ; acorn ovate-subglobose. 



HAB. Rocky and mountain woods. A large tree ;fr. on short pedunc. 



Qi. chinquapin : leaves on short petioles, obovate, acute at the base, 

 coarsely toothed, glaucous beneath ; teeth subequal, dilated, callous at 

 the tip ; cup hemispherical ; acorn ovate. 



HAB. Barren woods. A shrub, 3 4 feet high; acorns small, nu- 



383. CORYLUS. Hazlermt. 



C. am.ericana : leaves roundish, cordate, acuminate ; involucrum round- 

 ish-campanulate, larger than the subglobose nut, border dilated, coarse- 

 ly serrate. 



38* 



