Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Pinus glabra Walter
- Family: Pine (Pinaceae)
- Pollen Shed: March-April
- Field Marks: This pine has needles 2 1/2-4 inches long, always in clusters of 2's, and twisted.
- Habitat: Moist woods, floodplains, moist hammocks, shaded ravines, ravines, bluffs.
- Habit: Tree up to 120 feet tall; trunk diameter up to 2 1/2 feet.
- Bark: Becoming ridged and furrowed, brown or gray.
- Twigs: Slender, more or less smooth; winter buds grayish or brown, about 1/10 inch in
- Leaves: Needles in clusters of 2's, dark green, twisted, 2 1/2-4 inches long.
- Male Cones: Purplish yellow, up to 1/3 inch long, up to 1/5 inch in diameter.
- Female Cones: Brown, becoming gray when old, 1 1/2-3 inches long with a small, straight
prickle on the scale.
- Notes: The bark of this pine is totally different from other pines because of its small, narrow
plates. It is also different from most other pines because of its tolerance to flooding, being almost
like pond pine in this respect.
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