G. 89] CLASSIFICATION AND DESCRIPTION 159 
sessiliflora ; clustered and long-peduncled in var. pedunculata. Trees 
50 to 100 ft. high, extensively cultivated; from Europe; the nursery 
catalogues name as many as a score or more varieties. 
One var., fastigiata (Pyramidal Oak), is a peculiar upright tree like 
the Lombardy Poplar; var. pendula (Weeping Oak) has long, slender, 
drooping branches. 
N= 
Q. Cérris. 
21. Quércus Cérris, L. (TurRKEY OaK.) Leaves on very short 
stalks, oblong, deeply and unequally pinnatifid, hairy beneath; lobes 
lanceolate, acute, somewhat angular. Acorns in the axils of the 
leaves of the year, ovate, with a hemispherical, bristly or mossy cup. 
Several varieties of this species, from Europe, are cultivated in this 
country. They form tall, round-headed, symmetrical trees. 
Genus 89. CASTANEA. 
Trees or shrubs with alternate, simple, straight-veined, 
elongated, pointed leaves. Sterile flowers in long, droop- 
ing, couspicuous catkins, blooming in June or July; the 
fertile ones rather inconspicuous, but forming prickly- 
coated burs which hang on till the frost, when they split 
open and let out the brown, horny- coated nuts. Wood 
light, coarse-grained. 
* Large tree with burs having 1 to3 nuts.............. cere eee 1, 
* Small tree with burs having 1 rounded nut..... ee eer 2. 
