978 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



1821. 



roundish. Buds, on young trees (see Jig. 1821.), from i in. to fin. 

 long, -^ in. broad, pointed, brown, and covered with resin ; on the 

 full-grown trees at Dropmore as in ^g. 1822. Leaves (see Jig. 

 1823.) from 3^ in. to 4i in. long; sheath fin. long, white at first, 

 and afterwards becoming darker, but scarcely black. Cones from 

 2iin. to Sin. long, and from liin. to H in. broad; scales IJ in. 

 long, terminating in depressed quadrilateral pyramids, ending in a 

 prickle, pointing outwards. Seed little more than -J in. long ; but, 

 with the wing, from fin. to fin. long. Cotyledons, ?. A large tree. 

 New England to Virginia ; in light, friable, and sandy soils. Height 

 70 ft. to 80 ft. 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. T. alopecuroidea 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. serotina. 



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 li in. 

 to 7 in. according to the desjree 

 of moisture in the soil. The 



4' 



1S22. P. rigida. 



male catkins are 1 in. long, 



straight, and winged, like those 



of the pond pine (P. serotina). 



The size of the cones depends 



on the nature of the soil, and 



varies from less than 1 in. to 



more than 3 in. in length ; they 



are of a pyramidal shape, and 



each scale is pointed with an. acute prickle of about -^in. long. 



thftse trees grow in masses, tlie cones are dispersed singly over the branches ; 



and they shed their seeds the first autumn after they are mature ; but, on 



1S25. P. rigida. 



Whenever 



