Pinus virginiana
Pinus strobus
Jersey pine, scrub pine, Virginia pine
eastern white pine, northern white pine, pin blanc, soft pine, Weymouth pine, white pine
gray-brown with irregular, scaly-plated ridges, on upper sections of trunk reddish, scaly.
gray-brown, deeply furrowed, with long, irregularly rectangular, scaly plates.
spreading-ascending to spreading-descending;
twigs slender, red- or purple-tinged, often glaucous, aging red-brown to gray, rough.
whorled, spreading-upswept;
twigs slender, pale red-brown, glabrous or pale puberulent, aging gray, ±smooth.
ovoid to cylindric, red-brown, 0.6–1cm, resinous or not resinous;
scale margins white-fringed.
ovoid-cylindric, light red-brown, 0.4–0.5cm, slightly resinous.
2 per fascicle, spreading or ascending, persisting 3–4 years, 2–8cm × 1–1.5mm, strongly twisted, deep to pale yellow-green, all surfaces with inconspicuous stomatal lines, margins serrulate, apex narrowly acute;
sheath 0.4–1cm, base persistent.
5 per fascicle, spreading to ascending, persisting 2–3 years, 6–10cm × 0.7–1mm, straight, slightly twisted, pliant, deep green to blue-green, pale stomatal lines evident only on adaxial surfaces, margins finely serrulate, apex abruptly acute to short-acuminate;
sheath 1–1.5cm, shed early.
ellipsoid-cylindric, 10–20mm, red-brown or yellow.
ellipsoid, 10–15mm, yellow.
cones maturing in 2 years, shedding seeds soon thereafter, persisting to 5 years, symmetric, lance-ovoid or lanceoloid before opening, ovoid when open, 3–7(–8)cm, dull red-brown, nearly sessile or on stalks to 1cm, scales rigid, with strong purple-red or purple-brown border on adaxial surface distally;
apophyses slightly thickened, slightly elongate;
umbo central, low-pyramidal, with slender, stiff prickle.
cones maturing in 2 years, shedding seeds and falling soon thereafter, clustered, pendent, symmetric, cylindric to lance-cylindric or ellipsoid-cylindric before opening, ellipsoid-cylindric to cylindric or lance-cylindric when open, (7–)8–20cm, gray-brown to pale brown, with purple or gray tints, stalks 2–3cm;
apophyses slightly raised, resinous at tip;
umbo terminal, low.
=24.
=24.
Pinus virginiana
Pinus strobus
Pinus virginiana is weedy and fire successional and often forms large stands. It is mostly too small and too profusely branched to be valued except as pulpwood.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Pinus strobus is an important timber tree; because of extensive lumbering, few uncut stands remain. It was once prized as a source for ship masts, and large tracts of it were reserved for the Royal Navy during colonial times.
Pinus strobus var. chiapensis appears to be as Martínez saw it: a clinal variant that, compared to the type variety, has finer leaves, different resin canal distribution, and heavier cones when cones of similar sizes are compared.
Eastern white pine (Pinus strobus) is the provincial tree of Ontario and the state tree of Maine and Michigan.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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