Key to the Gymnosperms of the Southeastern U.S. -
Key to the Pines (Pinus)
Needles mostly in fascicles of 3


Most needles are longer than 25 cm. (9 7/8 in.) -
Longleaf pine (Pinus palustris)

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Most needles are shorter than 25 cm. (9 7/8 in.)

Most needles longer than 25 cm Most needles shorter than 25 cm
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