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Pinus monophylla - singleleaf pinyon

Scientific Family
Pinaceae
Synonyms
Pinus californiarum, Pinus edulis Engelm. var. fallax
Plant type
Trees
Riparian
No

Plant Description

Origin
Native
Similar species
Pinus edulis

Often with several twisted trunks, low branches and a broad crown. Similar to P. edulis, but more heat tolerant and has lower ultimate height and needles are usually single. P. monophylla does hybridize with P. edulis.

Needles usually solitary, round, sometimes with a strong groove on each side. Trunk strongly tapering, much branched; crown usually rounded, dense.

Height
20 feet
Width
15 feet

Habitat

Habitat description

Found in dry woodlands and dry rocky soils.

Plant Community
Grasslands
Interior Chaparral
Montane Conifer Forest
Pinyon Juniper Woodlands
Low elevation
3200
High elevation
7000

Leaves

Leaf color
Green to grayish-green
Leaf type
Needles
Leaf shape
Narrow
Leaf margin
Smooth
Leaf attachment
Other
Leaf hairs
None
Spines
No
Leaf Drop
Evergreen

Needles mostly single. Stout, slightly curved and sharp-tipped, 1 to 2 inches long. Numerous white bands. Needle sheath sheds after first year.

Flowers

Flower shape
Other
Tubular
No

Gymnosperm, does not flower.

Flower clusters
None

Fruit

Fruit color
Reddish-brown
Fruit type
Cone or cone-like

Woody, broadly ovoid cone. Short-stalked 2 to 3 inches long. Thick, broad, large scales deeply recessed and hold large wingless seeds, remain on tree for 2 years.

Bark/Branches

Bark color
Gray to reddish-brown
Bark texture
Rough

Initially smooth and light gray. Develops reddish-brown furrows and dark gray scaly ridges with age.