Key to the Gymnosperms of the Southeastern U.S. -
Key to the Pines (Pinus)
Bark of 2-4-year old twigs with strongly exfoliating scales


Fresh needles are brittle, breaking when bent, and are about 1 mm. (0.04 in.) wide or less -
Red pine (Pinus resinosa)

OR

Fresh needles are flexible, not breaking cleanly when bent, and are mostly over 1 mm. (0.04 in.) wide

Needles about 1 mm wide or less Needles mosly over 1 mm wide
Scale bar
Scale bar
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