The cone of ponderosa pine is distinctive and is a good identification tool. It is 3-6 inches long, yellowish brown, with a sharp prickled umbo.
NOTE: The thickened exposed part of each cone scale is called the apophysis. The umbo is the terminal protuberance on the tip of the apophysis. The umbo may be prickled or just slightly raised or pointed.
Karren Wcisel, TreeTopics.com
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Pinaceae, tree, conifer, cone, needle, evergreen, Pinus ponderosa, ponderosa pine