Pinus rigida |
Pinus flexilis |
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limber pine |
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Habit | Trees to 20 m tall; mature crown conic to rounded. | |
Buds | ovoid; reddish brown, resinous. |
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Leaves | in clusters of 5, upcurved, 3–6 cm × 1–1.5 mm, dark green; margins entire to finely serrulate; abaxial surfaces with faint stomatal bands; adaxial surfaces with obvious stomatal bands; apex acute; sheaths deciduous. |
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Pollen cones | ellipsoid-cylindrical, 1.2–1.6 cm long, red or yellow. |
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Seeds | oval, compressed, 6–12 mm long, brown to reddish brown, sometimes with spots; wingless or nearly so. |
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Trunks | to 2 m in diameter; straight, sometimes contorted; bark gray; smooth, becoming ridged with rectangular scaly plates with age; branches horizontal to ascending, usually persistent to base; twigs reddish brown and pubescent when young, becoming gray with age; smooth or nearly so with some bud scars. |
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Seed cones | ovoid to ovoid-cylindrical, symmetric, 7–15 cm long, light brown; horizontal to pendent, sessile to less than 2 cm long, maturing in 2 years, opening at maturity; umbos terminal; less than 2 mm; prickles absent. |
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2n | =24. |
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Pinus rigida |
Pinus flexilis |
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Distribution | ||
Discussion | High altitude montane forests. 1500–2500 m. BW. CA, ID, NV, WA; north to Alberta, east to NE, southeast to NM. Native. In Oregon, Pinus flexilis is found only in the Wallowa Mountains. Morphologically, it is similar to P. albicaulis but is distinguished from the latter by its larger cones that open at maturity. |
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Source | Flora of Oregon, volume 1, page 121 Stephen Meyers |
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Sibling taxa | ||
Web links |
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