440 



MONOECIA POLYANDR1A. 



HAB. Fields and woods. April. A shrub, 3 5 ft. high ; nuts large, 



edible. 

 C. rostrata : leaves oblong-ovate, acuminate ; stipules linear-lanceolate ; 



involucrum campanulate-tubular, longer than the nut, two-parted, with 



dentate segments. 

 HAB. Rocky woods. May. A shrub, 2 3 feet high ; involuc. with a 



long rostrum. 



384. FAGUS. Beech. 



E. ferruginea : leaves ovate-oblong, acuminate, pubescent beneath, cili- 

 ate on the margin, coarsely toothed, obtuse at the base and unequally 

 subcordate ; nut ovate, acutely triangular, very acute. 



HAB. Woods. A large tree; bark smooth; fruit muricate; leave* 

 ribbed. 



385. CASTANEA. Chestnut. 



C. vesca b. americana: leaves lanceolate, acuminate, mucronately ser- 

 rate, smooth on both sides. 



HAB. Woods. June. A large tree ; trunk straight; leaves large; 

 sterile spike Jiliform. 



386. BETULA. Birch. 



B. populifolia : leaves deltoid, long-acuminate, unequally serrate, very 

 smooth ; petioles smooth ; strobile pedunculate ; scales with roundish- 

 lateral lobes. 



HAB. Rocky Woods and mountains. May. A small or middle-sized 

 tree. 



B. excclsa : leaves ovate, acute, serrate ; petioles pubescent, shorter than 

 the peduncle ; strobile ovate, erect ; scales with rounded lateral lobes. 



HAB. Woods. A large tree ; bark smooth and yellowish, somewhat 

 fragrant. 



B. nigra : leaves rhombic-ovate, doubly serrate, acute, pubescent beneath, 

 entire at the base; strobile ovate; scales villous, with the segments 

 linear and equal. 



HAB. Banks of rivers. A middle-sized tree ; leaves acutely serrate. 



B. papyracea : leaves ovate, acuminate, doubly serrate, ttae veins be- 

 neath hairy ; peduncles smooth ; strobile nodding, pedunculate ; scales 

 with the lateral lobes short and suborbicular. 



HAB. Woods. A large tree ; cuticle tough, composed of numerous 

 membranaceous layers. 



B. lenta : leaves cordate-ovate, sharply serrate, acuminate ; xiprves be- 

 neath and the petioles hairy ; strobile erect ; scales smooth, U\e lobea 

 equal and obtuse, with elevated veins. 



HAB. W\>ods. A large tree; bark aromatic; branchlets darlc, 



387. CARPINUS. Hornbeam. 



ericana ; 



.rith 3-D? 



side. 



(J. americana : leaves oblong-ovate, acuminate, unequally serrate , stro- 

 bile with 3-parted scales, the middle segment oblique, toothed OP or e 



