‘2292
ARBORETUM AND ERUTICETUM.
PART 111
rocky banks of the Spokan river. Discovered by Douglas, and intro-duced in 1831.
Description, S/-c. A resinous tree, withbrownish-coloured bark. Leaves in fives,triquetrous, obtuse; bicanaliculate above,carinate below', with a blunt elevated line ;obsoletely crenelated on the margin ;smoothish, glaucous green; 11 in. to 3 in.long. Sheaths imbricated with elliptic-ob-long, obtuse, thinly membranaceous, loose,bright hrown scales, quickly falling off'.
Cones cylindrical, smooth, 6 in. to 8 in.long, generally in whorls ; scales spathu-late, apiculate; slightly convex beneath, darkash-yellow. Seeds oval, with a crustaceoustesta; wing hatchet-shaped, ohtuse, striated,dull yellow, shining. (Lamb.) Except inits much shorter and smoother leaves, thisspecies differs but little from P. Atrobus, ofwhich 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 bestto keep it distinct. Judging from the appearance of the specimens senthome 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 yetbeen raised.
2211
P. contdrta Douglas) The fitfisfcd-branched Pine . Buds roundish, with a blunt point, covered withresin, and brown, Leaves 2 in a sheath, 2 in. long; sheath very short, imbricated, black. Cones from2 in. to 2| in. long ; and from f in. to 1 in. broad ; scales with the apices having a depressed lateralrib, terminating in a blunt point, furnished with a caducous mucro. The shoots are regularly andclosely covered with leaves, much inthe same manner as those of P. (s.)pumilio, to which the specimen senthome by Douglas, in the Horticul"tural Society’s herbarium, bears ageneral resemblance. This pine wasfound by Douglas in North-westAmerica, on swampy ground nearthe sea coast; and, abundantly, nearCape Disappointment and CapeLookout. Dried specimens, withcones, were sent home in 1825-6-7 ;butnopIants 4 have been raised fromthem. No remarks respecting thisspecies, as far as we have been ableto learn, are among Douglas’s pa- |pers. Fig. 2210., to our usual scale, iand ^g.2211., of the natural size, :are from the specimens in the Hor-ticultural Society’s herbarium.
P. squamosa Bose does not appearqc j ] a to have been noticed by any other bo-
tanist Leaves 2 in a sheath, less glau-cous, shorter, stiffer, 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, are shorter and smaller thanthose of P. s. genevensis. The pyramidal points of the scales are long, and bent backwards. It is anative of the Lower Alps; and there are plants in the Jardin des Plantes , and in some of theFrench nurseries. It is, in all probability, a variety of P. sylvestris , though Bose considers it a distinctspecies. (Noun . Cours d’Agric ., art. Pin.) ;
P. turbinula Bose has the leaves 2 In a sheath, slightly glaucous, scarcely 1 in. long. The budsare very small, reddish, fringed, and not resinous. The cones are in whorls from 2 to 5 together,sharply pointed, longer than the leaves, with the scales almost square, and not pyramidal. Bosethinks that it is probably a native of North America ; but his description is taken from a tree in thegarden of the Petit Trianon , about 40 ft. high, the only one he had seen. He adds that its generalappearance resembles that of P, mltis; but it differs in its leaves being much shorter, and its conesbeing without spines.