National Park Service LogoU.S. Department of the InteriorNational Park ServiceNational Park Service
National Park Service:  U.S. Department of the InteriorNational Park Service Arrowhead
Arches National ParkSego Lily
view map
text size:largestlargernormal
printer friendly
Arches National Park
Dwarf Mountain-mahogany (Narrowleaf Mountain-mahogany; Littleleaf Mountain-mahogany)
Cercocarpus intricatus

Cercocarpus intricatus

Family: Rosaceae – Rose Family

Shrubs; 1.65' to 6.6' (0.5 to 2 m) tall

Leaves: alternate; simple; entire, curled, or toothed; can have hairs; 0.12” to 0.72” (3 to 18 mm) long, 0.032” to 0.06” (0.8 to 1.4 mm) wide

Flowers: 0 petals, 5 whitish, brownish, purplish sepals; 10 to 20 stamens, 1 pistil; radially symmetrical; cup-like base to flower; perfect - bisexual; flowers in small clusters; flowers 0.128” to 0.348” (3.2 to 8.7 mm) long

Pollinators: other Cercocarpus species are pollinated by insects

Fruits: achenes – one sided fruit; seed inside can have “feathery” tail. Rose hips contain several achenes.

Fruit provides food for wildlife. Some plants in this family are important wildlife browse, but some have a tendency to accumulate cyanide.

Blooms in Arches National Park: March, April, May

Habitat in Arches National Park: rocky areas and slopes in desert shrub and pinyon-juniper communities

Location seen: Windows road, Windows primitive loop, Delicate Arch Viewpoint

Other: The genus name, “Cercocarpus”, is from the Greek “kerkos” meaning “tail” and “carpos” meaning “fruit” and refers to the long feathery tails of the fruits. The species name, “intricatus”, means “entangled”.

The family is large and complex and some botanists think it should be divided into more than 1 family. The family is held together by the presence of the hypanthium (a cup-shaped structure on which the calyx, corolla, and often the stamens are inserted).

Collared Lizard  

Did You Know?
Lizards, including the colorful collared lizard, are one of the most frequently seen animals at Arches. When not chasing flies or basking in the sun, they are often seen doing what appears to be push-ups. Scientists believe this and other behaviors signal dominance and facilitate courtship.

Last Updated: July 19, 2007 at 02:59 EST