Pinus monophylla |
Pinus leiophylla |
|
---|---|---|
piñón, single leaf pinyon, single-leaf pine, singleleaf pinyon pine |
Chihuahuan pine, ocote Chino, pino Chino, pino prieto |
|
Habit | Trees to 14m; trunk to 0.5m diam., strongly tapering, much branched; crown usually rounded, dense. | |
Bark | red-brown, irregularly furrowed or cross-checked, scaly. |
|
Branches | spreading and ascending, persistent to near trunk base; twigs stout, orange-brown, aging brown to gray, sometimes sparsely puberulent. |
|
Buds | ellipsoid, light red-brown, 0.5–0.7cm, resinous; scale margins fringed. |
|
Leaves | 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. |
|
Pollen cones | ellipsoid, ca. 10mm, yellow. |
|
Seed(s) | 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. |
|
2n | =24. |
|
Pinus monophylla |
Pinus leiophylla |
|
Habitat | Dry low-montane or foothill pinyon-juniper woodland | |
Elevation | 1000–2300m (3300–7500ft) | |
Distribution |
AZ; CA; ID; NV; UT; Mexico in Baja California
|
AZ; NM; Mexico
|
Discussion | 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.) |
Varieties 2 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 2. | FNA vol. 2. |
Parent taxa | Pinaceae > Pinus | Pinaceae > Pinus |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Caryopitys monophylla, P. californiarum, P. cembroides var. monophylla | |
Name authority | Torrey & Frémont: in Frémont, Rep. Exped. Rocky Mts. 2: 319, plate 4. (1845) | Schiede & Deppe: in Schlechtendal & Chamisso, Linnaea 6: 354. (1831) |
Web links |