790 PINACEA PICEA 
PINUS 
tips. slender, nearly straight on sterile branchlets, incurved and stouter 
on fertile ones, 1-114 inch long, dark blue-green at maturity: staminate 
flowers oblong-cvlindrical, about 7 lines long, 4 lines-thick, the stipe about 
4 lines long: anthers dark purple: cones oblong-cylindrical to ovate, 1-3 
inches long, gradually narrowed to each end; scales thin, straight, usually 
erose-dentate: seed black, about half as long as the broad very oblique 
wing. In wet places on the high mountains, Oregon to Brit. Columbia 
and the Rocky Mountuins. 
P. Sitchensis Carr. Conif. 260 A very large tree, 200-300 feet high 
and 4-12 feet in diameter with thin scaley red-brown bark : branchlets thick, 
rough with the prominent persistent leaf bases, glabrous: leaves 5-8 lines 
long, about 1 line wide, flattened, short-pointed or obtuse to acute, stomatose 
and when young white on the upper surface: cones cylindrical-oval, 114-3 
inches long, an inch thick or less: bracts lanceolate, rigid 4-14 as long as 
the scales: scales yellowish, oblong soft, rounded and denticulate at the 
apex, 9-12 lines long: seeds slender 114-114 lines long, the wing 4-5 lines 
long by 1-144 lines wide, narrowly oblong or slightly oblique. Alongt he 
coast California to Alaska. 
11 PINUS L. Sp. 1000. 
Evergreen trees of various sizes and aspect, with flaky bark 
and monoecious flowers. Primary leaves only on young plants 
and shoots, flat, subulate and serrulate: the secondary in bundles 
of 1-5, from the axils of bud-scales and surrounded at base by a 
_more or less persistent sheath of membranous scales, needle-shaped, 
terete, semiterete or triangular according as bundles are of 1 or 
more, mostly delicately serrulate, with stomata on all sides: 
resin-ducts various in situation and number. Staminate aments 
an oblong or cylindrical often much elongated staminal column 
surrounded by a somewhat definite number of calyx-like bud- 
scales, the outer ones lateral and strongly keeled, from the axils 
of scales and crowded into a capitate or spicate inflorescence 
around the base of the same springs growth: anther-cells open- 
ing longitudinally, the connective terminating in a knob or semi- 
circular erect crest. Pollen-grains rather small, 2-lobed, with 2 
air-sacs. Pistillate aments axillary or subterminal, solitary or 
several together, the scales much larger than the bracts. Cones 
maturing the second year. scales more or less thickened and 
corky, the free exposed portion bearing a terminal or dorsal un- 
armed or prickly protuberance (umbo). Seeds without resin- 
vesicles, usually surrounded by the rim-like base of the wing 
which often spreads partly over the outer side of the seeds. 
Colytedoss 5-15. 
§ 1 Leaves in fives with peripheral resin-ducts, their sheaths 
loose and deciduous. Cones subterminal. Scales comparatively 
thin at the free exposed apex, with a terminal unarmed umbo. 
Anthers terminating in a knob or a few teeth, or in a short in- 
complete crest. 
P. Lambertiana Dougl. Linn. Trans. xy, 500. A large tree 100-300 
feet high and 5-20 feet in diameter, with light brown smoothish bark and 
spreading branches: leaves 3-4 inches long, rigid, with 5 or 6 lines of stomata 
