Pinus monophylla
Pinus palustris
piñón, single leaf pinyon, single-leaf pine, singleleaf pinyon pine
longleaf pine
red-brown, irregularly furrowed or cross-checked, scaly.
orange-brown, with coarse, rectangular, scaly plates.
spreading and ascending, persistent to near trunk base;
twigs stout, orange-brown, aging brown to gray, sometimes sparsely puberulent.
spreading-descending, upcurved at tips;
twigs stout (to 2cm thick), orange-brown, aging darker brown, rough.
ellipsoid, light red-brown, 0.5–0.7cm, resinous;
scale margins fringed.
ovoid, silvery white, 3–4cm;
scales narrow, margins fringed.
1(–2) per fascicle, ascending, persisting 4–6(–10) years, 2–6cm × 1.3–2(–2.5)mm, curved, terete (though often 2-grooved), gray-green, all surfaces with stomatal lines, margins entire, apex subulate;
sheath 0.5–1cm, scales soon recurved, forming rosette, shed early.
(2)–3 per fascicle, spreading-recurved, persisting 2 years, 20–45cm × ca. 1.5mm, slightly twisted, lustrous yellow-green, all surfaces with fine stomatal lines, margins finely serrulate, apex abruptly acute to acuminate;
sheath 2–2.5(–3)cm, base persistent.
ellipsoid, ca. 10mm, yellow.
cylindric, 30–80mm, purplish.
cones maturing in 2 years, shedding seeds and falling soon thereafter, spreading, symmetric, ovoid before opening, broadly depressed-ovoid to nearly globose when open, 4–6(–8)cm, pale yellow-brown, nearly sessile;
apophyses thickened, slightly raised;
umbo subcentral, raised or depressed, nearly truncate, apiculate.
cones maturing in 2 years, quickly shedding seeds and falling, solitary or paired toward branchlet tips, symmetric, lanceoloid before opening, ovoid-cylindric when open, 15–25cm, dull brown, sessile (rarely short-stalked);
apophyses dull, slightly thickened, slightly raised, nearly rhombic, strongly cross-keeled;
umbo central, broadly triangular, with short, stiff, reflexed prickle.
=24.
=24.
Pinus monophylla
Pinus palustris
Pinus monophylla hybridizes with P. edulis and P. quadrifolia.
Singleleaf pinyon (Pinus monophylla) is the state tree of Nevada.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Pinus palustris is fire successional, with a deep taproot and a definite grass stage. It is a valued species for lumber and pulpwood and was once important for naval stores (e.g., turpentine, pine oil, tar, pitch). It is fast disappearing over much of its natural range, partly through overharvesting but especially because of difficulties in adapting it to current plantation and management techniques.
Longleaf pine (Pinus palustris) is the state tree of North Carolina.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
LA Plants
