32 ' TREES AND SHRUBS 

acteristic feature of this species is the stout, sharp, and somewhat recurved 
prickles which terminate the scales of the ovate cones. The cones remain on 
the tree a long time, and confer upon it a peculiar appearance from the whorls 
or Clusters, which are so striking. The tree is of but little value,—too small 
for timber, and not rich in turpentine; not even a handsome tree, but still one 
which commends itself as a species for the Park because of its hardiness. 
Pinus Pyrenaica, Lafeyrouse, in part. PYRENEAN PINE. (Pinus 
Laricio, var. tenuifolia, Parlatore; Pinus Hispanica, Cook. 1 have adopted 
the name /. Pyrenaica solely on grounds of expediency. See Pinus Brutia 
of this Catalogue.) Tree 60 to 80 feet high, from mountains of Spain and of 
France. Beautifully conical in outline, attractive in both bark and foliage, 
and hardy, it should form one of the chief evergreen ornaments of our Park, 
Timber white and with but little turpentine. 
Pinus resinosa, Azton. RED PINE. (Pinus rubra, Michaux the younger.) 
An indigenous tree, 50 to 80 feet high, ranging from “ Massachusetts to Penn- 
sylvania, and Wisconsin and northward.’”’ Bark smoothish; red wood solid, 
“not very resinous,’ and valuable, The tree may fairly be regarded as orna- 
mental. 
Pinus rigida, Afi//er, PircH PINE, Sap PINE. (Linus teda rigida, 
Aiton; Pinus trasert, Loddiges; Pinus Loddigestit, Loudon.) ‘Yree is of 
middle size, native to, and common in, the Middle States. Hardy. Orna- 
mental, owing to its irregular outline and open growth. Timber is knotty and 
often too full of sap. Tar may be made in small quantity from it. 
Pinus Strobus, Zinu@us. WHITE PINE, WEYMOUTH PINE. This tree 
may fairly be called the glory of our forests. It ranges from Vermont to Vir- 
ginia, and along the northern border, where it is most common, west to the 
Mississippi. It is of rapid growth, and hence desirable either in parks or in 
forests, attaining sometimes in 20 years a diameter of 2 feet. It grows in its 
native forests from 125 to 165 feet high, and frequently is 6 feet through. 
It is so valuable that unless prompt means be taken to preserve or plant it, its 
practical extermination is nearathand. There are in cultivation the following 
varieties: * brevifolia, Booth; with the leaves short, numerous, and com- 
pressed around the shoots. nana, Anight, from I to 3 feet high, with very 
slender leaves. *nivea, Avight; leaves erect, dense, dark green when 
mature, but white on upper surface when young. ‘There are other less impor- 
tant varieties, 
Pinus sylvestris, Zézwz@us. ScorTcH Fir, ScotcH PINE. (Pinus Gene- 
vensis, Bauhin; Pinus Rigensts, Fischer ; Pinus uncinata, Don.) Native 
of Northern and Central Europe. Grows from 60 to 100 feet high. It makes 
up the bulk of the Norwegian pine forests, and is of great commercial value, 
«It is the Red and Yellow Deal of England.” It produces much turpentine, 
and will grow in nearly any soil, being besides quite hardy and ornamental, 
From it there are the following varieties: * Altaica, Lededour ; is a compact 
tree, with short, stiff leaves. * argentea, Stevens, has cones and leaves of 
silvery color. * horizontalis, You; has the branches spreading in a hori- 
zontal direction. * latifolia, Gordon ; is a robust, rapid-growing form, with 
larger leaves than the original tree. * monophylla, //odgins,; leaves 2 or 
3 in a cluster, but twisted to resemble a single leaf. * nana, //or?. ; is 
one to two feet high, but spreading over the ground; ‘leaves and branches 
stunted.” * variegata, //or7.; has some straw-colored mixed with the green 
leaves. 

