singleleaf pinyon Pinaceae Pinus monophylla
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.