Key to the Gymnosperms of the Southeastern U.S. -
Needles attached singly


Needles are two-sided, with distinct upper and
lower surfaces, which may be flat, concave or
convex (with, or without, a midridge or keel)

OR

Needles are not two-sided, but are three-sided,
four-sided, or more or less oval in cross section
(with, or without, ridges or keels)

Hand lens
Needles two-sided (close-up image) Needles three-sided, four-sided, or oval in cross section (close-up image)
Scale bar
Scale bar
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