Cercocarpus montanus var. glaber
Cercocarpus montanus Raf. var. glaber (S. Watson) F.L. Martin
Smooth Mountain Mahogany, Birchleaf Mountain Mahogany, True Mountain Mahogany, Hard Tack
Rosaceae (Rose Family)
Synonym(s): Cercocarpus betuloides, Cercocarpus betuloides var. betuloides, Cercocarpus betuloides var. multiflorus
USDA Symbol: CEMOG
Hard tack, a variable, open shrub or small tree, usually grows from 8-20 ft. tall. Twigs may be stiff and erect or graceful and spreading. Bark is smooth gray. Birch-like, semi-evergreen to evergreen leaves are dark green, and inconspicuous flowers are followed by feathery seedheads that turn the plant silver in fall.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Retention: Evergreen
Fruit Type: Achene
Size Notes: Up to about 25 feet tall.
Bloom InformationBloom Color: Yellow
Bloom Time: Mar , Apr , May
DistributionUSA: AZ , CA , OR , TX
Native Distribution: S.w. OR to Baja CA, e. to AZ. Disjunct populations in W. TX.
Native Habitat: Dry slopes & washes below 6000 ft.
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
Soil Description: Rocky, clay, or sandy soils.
Conditions Comments: Nitrogen-fixing and good for revegetation and erosion control. Drought-tolerant. Volunteer seedlings can be expected when well-established.
PropagationDescription: Propagation is possible with untreated seed.
Seed Collection: Collect seeds as soon as the fruits are dry. This is usually indicated by a white aspect to the fruiting branches. Avoid exposure of skin to the hairy, white styles.
Commercially Avail: yes
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Santa Barbara Botanic Garden - Santa Barbara, CA
NPSOT - Williamson County Chapter - Georgetown, TX
BibliographyBibref 298 - Field Guide to Texas Trees (1999) Simpson, B.J.
Search More Titles in Bibliography
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Cercocarpus montanus var. glaber in USDA Plants
FNA: Find Cercocarpus montanus var. glaber in the Flora of North America (if available)
Google: Search Google for Cercocarpus montanus var. glaber
MetadataRecord Modified: 2022-10-03
Research By: TWC Staff