G.89] CLASSIFICATION AND DESCRIPTION 159 



sessiliflora ; clustered and long-peduncled in var. pedunculate Trees 

 50 to 100 ft. high, extensively cultivated ; from Europe ; the nursery 

 catalogues name as many as a score or more varieties. 



One var., fastiyiata (Pyramidal Oak), is a peculiar upright tree like 

 the Lombardy Poplar ; var. pendula (Weeping Oak) has long, slender, 

 drooping branches. 



21. Q,u6rcus C6rris, L. (TURKEY 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, conspicuous 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 to 3 nuts 1. 



* Small tree with burs having 1 rounded nut 2. 



