singleleaf pinyon Pinaceae Pinus monophylla Torr. & Frém. Listen to the Latin symbol: PIMO Other Fact Sheets
Leaf: Evergreen needles, single (rarely 2 or 3 in a fascicle), stout, slightly curved and sharp-tipped, 1 to 2 inches long, green to gray-green, numerous white stomatal bands; fascicle sheath sheds after first year.
Flower: Species is monoecious; males pale yellow, cylindrical in tight clusters at ends of branches; females purplish, in small group at branch tips.
Fruit: Woody, broadly ovoid cone, reddish brown, short stalked, 2 to 3 inches long, thick, broad, large scales deeply recessed where they held two large wingless seeds, remain on tree for many years.
Twig: Moderate to stout, light reddish brown; buds pointed, ovoid, light reddish brown.
Bark: Initially smooth and light gray, developing reddish brown furrows and dark gray scaly ridges.
Form: A small tree to 40 feet, often with several twisted trunks, branching low and a broad crown.

Looks like: pinyon pine - Parry pine
leaf fruit twig bark form1 map
Additional Range Information:
Pinus monophylla is native to North America.
Range may be expanded by planting.
See states reporting singleleaf pinyon.
External Links:
USDAFS Additional Silvics
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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