2292 



ARBORETUM AND FRUTICETUM. 



PART 111 



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

 duced in 1831. 



Desci-iption, Sfc. A resinous tree, with 

 brownish-coloured bark. Leaves in fives, 

 triquetrous, obtuse; bicanaliculate above, 

 carinate below, with a blunt elevated line ; 

 obsoletely crenulated on the margin ; 

 smoothish, glaucous green; Hin. to Sin. 

 long. Sheaths imbricated with elliptic-ob- 

 lonff, obtuse, thinly membranaceous, loose, 

 bright brown scales, quickly falling off. 

 Cones cyHndrical, smooth, 6 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. 5tr6bus, of 

 w hich 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. 



:2\l 



A pp. 1 Species of Fine which are not yet introduced^ and of 

 which little is known. 



p. contirla Douglas. Tke twisted-\n&nchedi 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 2| in. long ; and from f in. to 1 in. broad ; scales witli the apices having a depressed lateral 

 rib, terminating in a blunt point, furnished with a caducous mucr'. The shoots are regularly and 



closely covered with leaves, much in 



the same manner as those of /'. (s.) 



puinilio, to wliich 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 Disai)pointment 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. Fip. 2210., to our usual scale, 



and y/^. 2211., of the natural size, 1 



are from the specimens in the Hor- 

 ticultural Society's herbarium. 

 1'. squaiiHisa Bosc does not appear 



to have been noticed by any other bo- 

 tanist Leaves 2 in a sheath, less glau- 

 (!ous, shorter, stiffcr, and less numerous, than those of P. sylvestris. The buds are large, obtuse, 

 and very resinous ; and the cones, which are of a clear brown colour, arc siiorter and smaller than 

 those of A 8. genevensis. The pyraniid.il points of the scales are long, and bent backwards. It is a 

 native of the Lower Alps ; and there are plants in the Jardin des I'lantes, and in some of the 

 French nurseries. It is, in all probability, a variety of P. sylvestris, though Bosc considers it a distinct 

 species. {Nouu. Cours d'Ajiric, art. Pin.) ; 



P. turhiniUa Hose has the leaves 2 in a sheath, slightly glaucous, scarcely 1 in. long. The buds 

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

 sharply pointed, longer than the leaves, with the scales almost 6(piare, and not pyramidal. Bosc 

 thinks tnat it is probably a native of North America ; but his description is taken from a tree in the 

 garden of the I'ctit Trianon, about 40 ft. high, the only one he had seen. He adds that its general 

 appearance resembles that oi P. mltis; but it differs in its leaves being much shorter, and its cones 

 being without spines. 



