Description of Native Trees 



88. Buttonwood. Buttonball. Plane-tree. (Platanus 

 occidentalis.) 



Leaf : 4'-g', simple, alternate, coarsely serrate, 3-5-lobed, 

 lobes pointed, general form almost circular. Fruit : in soft 

 globular masses hanging through winter ; bark peels off in irreg- 

 ular patches leaving trunk whitish or yellowish. (PI. VII.) 



89. Silver-leaf Poplar. White Poplar. (Populus alba.) 



Leaf : 2'-3', simple, alternate, coarsely serrate and 3-5-lobed, 

 ovate, cottony-white beneath; trunk below dark and rough, above 

 whitish, resembling white birch ; introduced but quite common. 

 (PI. VI.) 



90. Cut-leaved Birch. (Betula alba laciniata.) 



Leaf : 2—3', simple, alternate, serrate and lobed, triangular, a 

 variety of the white birch, the weeping cut-leaved birch being the 

 most beautiful (PI. V.) 



91. Cut-leaved Beech. (Fag^s sylvatica asplenifolia.) 



Leaf : 3'-4', simple, alternate, lobed, with a few coarse teeth, 

 narrow-ovate, base wedge-shaped, apex pointed, otherwise like 

 the common beech (40) ; introduced. (PI. I. Foreign trees.) 



92. Flomrering Dogwood. (Cornus florida.) 



Leaf : 3-5', simple, opposite, entire, ovate, apex taper- 

 pointed, base a little narrowed, veins beneath curving toward 

 apex. Flower : greenish-yellow, small, clustered, each cluster 

 surrounded by four large, petal-like, white or pinkish bracts, the 

 whole apparently forming one flower, before the leaves ; April, 

 May ; a variety has the " flower " a deep pink. Fruit : bright 

 red berries, showy in fall ; low tree and shrub. (PL VII.) 



93. Fringe- tree. (Chionanthus virginica.) 



Leaf : 4-8', simple, opposite, entire, oval or oblong, dark 

 green. Flower : white, in long, loose axillary clusters ; petals 

 4-6, long-linear ; delicate and ornamental inflorescence ; June ; 

 south Pennsylvania and south ; low tree and shrub ; cultivated.- 

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