229*2 



AKUOIIETUM AND FRUTICETUM. 



PART 111 



rock} banks of the Spokan river. Discovered by Douglas, and intro- 

 duced in L831. 



Description, $c. A resinous tree, with 

 brownish-coloured bark. Leaves in fives, 

 triquetrous, obtuse; bicanaliculate above, 

 cannate below, with a blunt elevated line ; 

 obsoletelv crenulated on the margin ; 

 smoothish, glaucous green; 1 ^ in. to 3 in. 

 long. Sheaths imbricated with elliptic-ob- 

 long, obtuse, thinly membranaceous, loose, 

 bright brown scales, quickly falling off. 

 Cones cylindrical, smooth, G in. to 8 in. 

 long, generally in whorls ; scales spathu- 

 late, apiculate; slightly convex beneath, dark 

 ash-yellow. Seeds oval, with a crustaceous 

 testa; wing hatchet-shaped, obtuse, striated, 

 dull yellow, shining. (Lamb.) Except in 

 its much shorter and smoother leaves, this 

 species differs but little from P. Strobus, of 

 which it may prove to be only a variety ; 

 but, until an opportunity occurs of examin- 

 ing the male catkins, and ascertaining other particulars, it is considered best 

 to keep it distinct. Judging from the appearance of the specimens sent 

 home by Douglas, the tree must abound in resin. The plant in the Horti- 

 cultural Society's Garden is only a few inches high. Among Douglas's spe- 

 cimens, there is a variety with red cones, from which no plants have yet 

 been raised. 



2209 



App. i Species of Pine which are not yet introduced, and of 

 which little is known. 



The shoots are regularly and 



221 



P. coniirta Douglas. The twisted-branched Pine. Buds roundish, with a blunt point, covered with 

 resin, and brown. Leaves 2 in a sheath, 2 in. long ; sheath very short, imbricated, black. Cones from 

 2 in. to 21 in. Ion*; ; and from jf in. to 1 in. broad ; scales with the apices having a depressed lateral 

 rib, terminating in a blunt point, furnished with a caducous mucro. " 

 closely covered with leaves, much in 

 the same manner as those of P. (s.) 

 pumilio, to which the specimen sent 

 home by Douglas, in the Horticul- 

 tural Society's herbarium, bears a 

 general resemblance. This pine was 

 found by Douglas in North-west 

 America, on swampy ground near 

 the sea coast; and, abundantly, near 

 Cape Disappointment and Cape 

 Lookout. Dried specimens, with 

 cones, were sent home in 1825-6-7 ; 

 but no plants, have been raised from 

 them. No remarks respecting this 

 Species, as far as we have; been able 

 to learn, are among Douglas's pa- 

 pers. Ulg, 2210., to our usual scale, 

 and tfg. 2211., of the* natural size, 

 are from the specimens in the Hor- 

 ticultural Society's herbarium. 



P. gquambsa Bosc does not appear 

 to have been noticed i>y any other bo- 

 tanist Leaves 2 in a sheath, less glau- 



• Wet, and leSI numerous, that) those of /'. sylvcsl lis. 



no u , and the (one., which are of a clear brown colour, 

 p The pyramidal points of the scales are long, and bent backwards. It is a 



Lowei M|'- , and there are plants in the Jardin des I'lantes, and in some of the 

 | I-., all probability, a variety of P. sylvestris, though Hose considers it a distinct 



i ..*, d /•-,« , art. I'm. J J 



P turbinbla ives 2 In a sheath, slightly glaucous, scarcely 1 in. long. The buds 



reddish, fringed, and not resinous. The cones are in whorls from 2 to 5 together, 



nharnly pointed, longer than the leaves, with the scales almost square, and not pyramidal. Bosc 



' ■ i rorth America; but his description is taken from a tree in the 



i of the Petit Trianon, about 40 ft. high, the only one he had seen. I le adds that its general 

 thai ol /'. miii,, but it differs In its leaves being much shorter, and its cones 



f >i\U 



The buds are large, obtuse, 

 are shorter and smaller than 



