Pinus lambertiana
Pinus sylvestris
sugar pine
pin d'écosse, Scotch pine, Scots pine
cinnamon- to gray-brown, deeply furrowed, plates long, scaly.
spreading, distal branches ascending;
twigs gray-green to red-tan, aging gray, mostly puberulent.
cylindro-ovoid, red-brown, to 0.8cm, resinous.
5 per fascicle, spreading to ascending, persisting 2–4 years, 5–10cm × (0.9–)1–1.5(–2)mm, straight, slightly twisted, pliant, blue-green, abaxial surface with only a few lines evident, adaxial surfaces with evident white stomatal lines, margins finely serrulate, apex acuminate;
sheath (1–)1.5–2cm, shed early.
ellipsoid-cylindric, to 15mm, yellow.
cones maturing in 2 years, shedding seeds and falling soon thereafter, often clustered, pendent, symmetric, cylindric before opening, lance-cylindric to ellipsoid-cylindric when open, 25–50cm, yellow-brown, stalks 6–15cm;
apophyses somewhat thickened;
umbo terminal, depressed, resinous, slightly excurved.
=24.
Pinus lambertiana
Pinus sylvestris
The largest species of the genus, Pinus lambertiana also has the longest seed cone in the genus. It is an important timber tree with harvest far exceeding regrowth. It is easily distinguished from P. monticola and P. strobus by its larger cones and thicker cone scales with larger seeds; it is somewhat less reliably distinguished by its leaves, which are slightly wider and more tapering-tipped and have some stomatal lines evident on the abaxial surfaces (the lines not evident in P. monticola and P. strobus). A "sugary" resin high in cyclitols exudes from the sweet-scented fresh-cut wood.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties ca. 20 (1 introduced in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
BC
