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Pinus monophylla Torr. & Frém.
One-leaved pinyon, Single-leaf pinyon, Singleleaf pinyon
USDA Symbol: PIMO
USDA Native Status: Native to U.S.
A small, bushy tree, 15-30 ft. tall, with a divided trunk and compact, rounded crown. The gray-green needles occur singly. Slow-growing, small pine with spreading, rounded, gray-green crown and low, horizontal branches; often shrubby.
This species is easily recognized by the needles borne singly, instead of in bundles of 2-5, as in other native pines. The large, edible, mealy seeds are sold locally as pinyon or pine nuts and used to be a staple food of Indians in the Great Basin region. Many kinds of birds and mammals, especially woodrats or packrats, also consume the seeds.
Plant CharacteristicsDuration: Perennial Habit: Tree Leaf Complexity: Simple Leaf Shape:
Green Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Apr
AZ , CA , ID , NM , NV , UT Native Distribution:
UT to AZ & s. CA Native Habitat:
Dry, rocky slopes & ridges; 3500-9000 ft. USDA Native Status: L48(N)
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: High
Soil Description: Dry, rocky soils.
Conditions Comments: Forms pure stands of considerable extent in the wild. Extremely slow-growing. Tolerant of bad climates and other stress factors.
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
Sow fresh, untreated seed in late fall. Seedlings are quite susceptible to damping-off. Seed Collection:
Collect cones from vigorous trees in late summer and fall just before they completely open to drop seeds. Spread cones on racks to dry so they will release seeds. Cones may be shaken to release seeds. Store at a moisture content of 5-10 %
fresh weight. Commercially Avail:
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Santa Barbara Botanic Garden
- Santa Barbara, CA
Recommended Species Lists
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Record Modified: 2007-01-01
Research By: TWC Staff