3. Japanese maple (_Acer polymorphum_)

It has several varieties of different hues and it colors beautifully
in the fall; it does not grow to large size.

CONIFEROUS

14. Oriental spruce (_Picea orientalis_)

Forms a dignified, large tree with a compact crown and low branches;
is hardy.

15. Austrian pine (_Pinus austriaca_)

Is very hardy; possesses a compact crown; will grow in soils of
medium quality.

16. Bhotan pine (_Pinus excelsa_)

Grows luxuriantly; is dignified and beautiful; requires a good soil,
and in youth needs some protection from extreme cold.

17. White pine (_Pinus strobus_)

Branches gracefully and forms a large, dignified tree; will thrive
on a variety of soils.

18. European larch (_Larix europaea_)

Has a beautiful appearance; thrives best in moist situations.

19. Blue spruce (_Picea pungens_)

Extremely hardy; forms a perfect specimen plant for the lawn.

20. Japanese umbrella pine (_Sciadopitys verlicillata_)

Very hardy; retains a compact crown. An excellent specimen plant
when grouped with other evergreens on the lawn. Does not grow to
large size.

21. Mugho pine (_Pinus mughus_)

A low-growing evergreen; hardy; important in group planting.

22. Obtuse leaf Japanese cypress (_Retinospora obtusa_)

Beautiful evergreen of small size; hardy; desirable for group
planting.

23. English yew (_Taxus baccata_)

An excellent evergreen usually of low form; suitable for the lawn,
massed with others or as a specimen plant; will grow in the shade of
other trees. There are various forms of this species of distinctive
value.

TREES BEST FOR THE STREET

1. Oriental sycamore (_Platanus orientalis_)

Very hardy; will adapt itself to city conditions; grows fairly fast
and is highly resistant to insects and disease.

2. Norway maple (_Acer platanoides_)

Very hardy; possesses a straight trunk and symmetrical crown; is
comparatively free from insects and disease and will withstand the
average city conditions.

3. Red oak (_Quercus rubra_)

Fastest growing of the oaks; very durable and highly resistant to
insects and disease; will grow in the average soil of the city
street.

[Illustration: FIG. 93.--Street Trees. Norway Maples.]

4. Gingko (_Gingko biloba_)

Hardy and absolutely free from insects and disease; suited for
narrow streets