LXXVII. CONI'FER^E: PI V NUS. 



981 



abilis may therefore be considered as an imaginary species, or as a synonyme 

 to P. mitis. 



1 22. P. PONDERO'SA Doug. The heavy-wooded Pine. 



Identification. Douglas's specimens in the Horticultural Society's herbarium ; Lawson's Manual, 



p. 354. ; Lodd. Cat., ed. 1836 ; Pin. Wob., p. 44. ; Penny Cyc., vol. 18. 

 Engravings. Pin. Wob., t. 15. ; our fig. 1833. to our usual scale ; and figs. 1830. to 1832. of the 



natural size, from the tree in the Horticultural Society's Garden, and Douglas's specimens in the 



Horticultural Society's herbarium. 



Spec. Char., $c. Leaves three in a sheath, much longer than the cones, 

 flexible, tortuous, with short sheaths. Crest of the anthers rounded, entire. 

 Cones ovate, reflexed, with the apices of the scales flattened, with a raised 

 process in the middle, terminating in a conical, minute, recurved spine, 

 slightly quadrangular. Buds, in Douglas's specimen, |. in. 

 long, and f- in. broad ; cylindrical, with straight sides, rounded 

 like a dome at the extremity, but with a prominent blunt 

 point ; dark brown, and covered with resin. Buds, on the 

 living tree in the Horticultural Society's Garden (see fig. 

 1830.), from 1 in, to l^in. long, and from f in. to 1| in. broad ; 

 smooth, cylindrical, with a long point; reddish b~rown, and 

 covered with a fine white bloom, con- 

 sisting of fine particles of resin, sur- 

 rounded by two or more smaller buds. 

 Leaves disposed in parallel spirals ; in 

 Douglas's specimen (see fig. 1832.), 

 1830. from 9 in. to 1 1 in. long ; 3 in a sheath, 

 which is from in. to 1 in. in length, 

 with numerous fine rings ; scales of the leaves per- 

 sistent on the wood, even of two years' or three 

 years' growth. Leaves, on the living plant, from 

 7 in. to 9 in. long. The cone (see fig. 1831.), in 

 Douglas's specimen, 

 is deformed, and very 

 imperfectly deve- 

 loped ; it is only 3 in. 

 long, and f in. broad. 

 The scales are termi 

 nated in flattened pro- 

 cesses, scarcely ribbed 

 in any direction. In 

 the centre of the pro- 

 cess is a protuber- 

 ance, large in propor- 

 tion to the scale, 

 which terminates in a 

 sharp prickle, point- 

 ing outwards. Scale 

 1 in. long, and f in. 

 broad ; dark brown. 

 Seed ^ in. long, and 

 f in. broad ; dark 

 brown, with the wing 

 nearly 1 in. in length, 

 and in. in breadth ; 

 wings of a yellowish 



1831. P.ponderosa. b ' A lofty tree. 



Jsorth America, on 

 the north-west coast. Height 50 ft. to 1 00 ft. Introduced in 1826. It 

 has not yet flowered in England. 



3 R 3 



1832. P. ponders*. 



