Description of Foreign Trees 



6. European Alder. (Alnus cordata.) 



LEAF : 2'-3', simple, alternate, serrate, ovate, base cordate, 

 apex considerably pointed ; young branches mostly hairy, but not 

 sticky ; catkins in April. Italy. 



7. Paper Mulberry. (Broussonettia papyrifera.) 



LEAF : 4/-6', simple, alternate, serrate, often lobed, ovate, 

 very rough-hairy above, thick soft-downy beneath, base some- 

 times cordate. Japan. (PI. III.) 



8. European Hornbeam. (Carpinus betulus.) 



LEAF and bark as in American species ("Native Trees," 35) ; 

 most evident difference in the fruit-bract, which has a very long, 

 serrate middle lobe in the European, but a much shorter one with 

 entire edge in the American. 



9. European Chestnut. (Castanea sativa.) 



LEAF : as in American species (" Native Trees," 41), but blunt 

 at base, not pointed ; flower in catkins ; nut larger and less sweet. 



10. European Beech. (Fagus sylvatica.) 



LEAF: 2'-3 f , simple, alternate, entire or wavy-toothed, more 

 hairy, smaller and rounder than the American beech. Var. pur- 

 pur ea (copper or bronzed beech) has very dark foliage ; var. pen- 

 dula has long pendent branches ; var. asplenifolia, cut-leaved 

 beech, has longer leaves deeply cut. (PI. I.) 



11. Black Mulberry. (Morus nigra.) 



LEAF : 3'-$', simple, alternate, serrate, often 2-3-lobed, ovate 

 to roundish ; fruit ovate, violet-black. Europe. 



12. Asiatic Cherry. (Prunus cerasus.) 



LEAF : simple, alternate, serrate, elliptical, not hairy, stiffly 

 divergent from stem. FLOWER : white (5 petals^ many stamens, 

 i style), in lateral umbels ; early May. 

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