Pinus sylvestris |
Pinus virginiana |
|
---|---|---|
pin d'écosse, Scotch pine, Scots pine |
Jersey pine, scrub pine, Virginia pine |
|
Habit | Trees to 18m; trunk to 0.5m diam., straight or contorted to erect or leaning; crown irregularly rounded or flattened. | |
Bark | gray-brown with irregular, scaly-plated ridges, on upper sections of trunk reddish, scaly. |
|
Branches | spreading-ascending to spreading-descending; twigs slender, red- or purple-tinged, often glaucous, aging red-brown to gray, rough. |
|
Buds | ovoid to cylindric, red-brown, 0.6–1cm, resinous or not resinous; scale margins white-fringed. |
|
Leaves | 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. |
|
Pollen cones | ellipsoid-cylindric, 10–20mm, red-brown or yellow. |
|
Seed(s) | 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. |
|
2n | =24. |
|
Pinus sylvestris |
Pinus virginiana |
|
Habitat | Dry uplands, sterile sandy or shaly barrens, old fields, and lower mountains | |
Elevation | 0–900m (0–3000ft) | |
Distribution |
North America; Eurasia
|
AL; DE; GA; IN; KY; MD; MS; NC; NJ; NY; OH; PA; SC; TN; VA; WV
|
Discussion | Varieties ca. 20 (1 introduced in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 2. | FNA vol. 2. |
Parent taxa | Pinaceae > Pinus | Pinaceae > Pinus |
Sibling taxa | ||
Subordinate taxa | ||
Name authority | Linnaeus: Sp. Pl. 2: 1000. (1753) | Miller: Gard. Dict., ed. 8 Pinus no. 9. (1768) |
Web links |