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. (Pl. 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. 
g. European Chestnut. (Castanea sativa.) 
LEAF: as in American species (‘* Native Trees,” 41), but dln 
at base, not pointed ; flower in catkins ; nut larger and less sweet. 
10. European Beech. (Fagus sylvatica.) 
LEAF: 2’-3', simple, alternate, entire or wavy-toothed, more 
hairy, smaller and rounder than the American beech. Var. pur- 
purea (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: 3-5’, 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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