9738 ARBORETUM ET FRUTICETUM BRITANNICUM. 
roundish, Buds, on young trees (see jig. 1821.), from $in. to $ in. 
long, 3, in. broad, pointed, brown, and covered with resin; on the 
full-grown trees at Dropmore as in jig. 1822. Leaves (see jig. 
1823.) from 33 in. to 43 in. long; sheath 2in. long, white at first, 
and afterwards becoming darker, but scarcely black. Cones from 
2L in. to 3in. long, and from liin. to 14 in. broad; scales 13 in. 
long, terminating in depressed quadrilateral pyramids, ending in a 
prickle, pointing outwards. Seed little more than 4in. long; but, 
i with the wing, from £in. to Zin. long. Cotyledons, ?. A large tree. 
4 New England to Virginia ; in light, friable, and sandy soils. Height 
70 ft. to 80ft. Introduced in 1759. It flowers in May, and the 
* cones are produced in the autumn of the second year. 
Variety. According to Mr. Lambert, P. 7. alopecurdidea Ait. is a variety 
of P. rigida, characterised by its much shorter and stouter leaves, and its 
ovate-oblong, much narrower, and aggregated cones. (Lamb. Pin., ed. 2., 
no. 17.) We have, however, : 
placed it under P. serétina. 
The pitch pine, in America, 
Michaux informs us, varies, ac- 
cording to soil and situation, 
from 12 or 15 feet to 70 or 80 
feet in height. “The buds are 
always resinous ; and its triple 
leaves vary in length from 14 in. 
to 7 in. according to the degree 
of moisture in the soil. The 
1822. P. rigida. 
male catkins are 1 in. long, 
straight, and winged, like those 
of the pond pine (P. serétina). 
The size of the cones depends 
on the nature of the soil, and 
varies from less than lin. to 
more than 3 in. in length ; they 
are of a pyramidal shape, and 
each scale is pointed with an acute prickle of about 8, in. long. Whenever 
these trees grow in masses, the cones are dispersed singly over the branches ; 
and they shed their seeds the first autumn after they are mature; but, on 
1593. P. rignda. 
