Pinus resinosa
Pinus jeffreyi
Norway pine, pin rouge, red pine
Jeffrey pine
light red-brown, furrowed and cross-checked into irregularly rectangular, scaly plates.
yellow-brown to cinnamon, deeply furrowed and cross-checked, forming large irregular scaly plates.
spreading-ascending;
twigs moderately slender (to 1cm thick), orange- to red-brown, aging darker brown, rough.
spreading-ascending;
twigs stout (to 2cm thick), purple-brown, often glaucous, aging rough.
ovoid-acuminate, red-brown, to ca. 2cm, resinous;
scale margins fringed.
ovoid, tan to pale red-brown, 2–3cm, not resinous;
scale margins conspicuously fringed.
2 per fascicle, straight or slightly twisted, brittle, breaking cleanly when bent, deep yellow-green, all surfaces with narrow stomatal bands, margins serrulate, apex short-conic, acute;
sheath 1–2.5cm, base persistent.
3 per fascicle, spreading-ascending, persisting (2–)4–6(–7) years, 12–22(–25)cm × ca. 1.5–2mm, slightly twisted, gray- to yellow-green, all surfaces with fine stomatal lines, margins finely serrulate, apex acute to acuminate;
sheath (1–)1.5–2.5(–3)cm, base persistent.
ellipsoid, ca. 15mm, dark purple.
lance-cylindric, 20–35mm, yellow to yellow- or purple-brown or yellow.
cones maturing and opening in 2 years, spreading, symmetric, ovoid before opening, broadly ovoid to nearly globose when open, 3.5–6cm, light red-brown, nearly sessile;
apophyses slightly thickened, slightly raised, transversely low-keeled;
umbo central, centrally depressed, unarmed.
cones maturing in 2 years, shedding seeds and falling soon thereafter, nearly terminal, spreading, slightly asymmetric at base, ovoid-conic before opening, cylindro-ovoid when open, (10–)15–30cm, light red-brown, nearly sessile or on stalks to 0.5cm, abaxial surface of scales not darker than or sharply contrasting in color with adaxial surface, scales in low spirals (as compared to Pinus ponderosa) of 8 or more per row as viewed from side, those of cones just prior to and after cone fall not so spreading and deflexed, thus not so much separated from adjacent scales;
apophyses slightly thickened and raised, not keeled;
umbo central, slightly raised, with short, slender, reflexed prickle.
=24.
=24.
Pinus resinosa
Pinus jeffreyi
Pinus resinosa was once the most important timber pine in the Great Lakes region.
Norway pine (Pinus resinosa) is the state tree of Minnesota.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Pinus jeffreyi has a form very similar to that of P. ponderosa, but it is a smaller species when compared with sympatric populations of the latter. It is cut and sold under the same name as P. ponderosa, but the sweetish odor of the fresh-cut wood contrasts sharply with the turpentine odor of ponderosa pine. The resin chemistry of the two species is significantly different.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Go Botany
IL Wildflowers
MI Flora
MN Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
CA
OR
Flora NW
PNW Herbaria
