Print Report

CEGL000842 Pinus ponderosa / Arctostaphylos patula Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Ponderosa Pine / Greenleaf Manzanita Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland association has been reported from the mountains and plateaus in Colorado, Utah and California. Elevation ranges from 1770-2590 m (5800-8500 feet). Sites are dry, warm, mid to lower slopes, benches and ridges often with southerly aspects. Soils are typically sandy loams but vary from sand to silt loam. Parent materials are sandstone, limestone and occasionally basalt and andesite. The tree canopy is typically open (about 30% cover), but can range from 10-80% cover and is dominated by Pinus ponderosa. Scattered Juniperus scopulorum trees may also be present. Arctostaphylos patula dominates the moderate to sparse shrub layer. Others shrub species present may include Amelanchier utahensis, Ceanothus spp., Cercocarpus montanus, Mahonia repens, Purshia tridentata, Quercus gambelii, Symphoricarpos oreophilus, and Tetradymia canescens. The sparse herbaceous layer (<20% cover) is primarily composed of graminoids such as Carex rossii, Achnatherum hymenoides, Elymus elymoides, Leymus salinus, and Poa fendleriana. Forbs are sparse and may include Achillea millefolium, Balsamorhiza sagittata, and Eriogonum racemosum.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This plant association is seral in California.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: This woodland association is characterized by a tree canopy dominated by Pinus ponderosa that is typically open (about 30% cover) but can range from 10-80% cover. Scattered Juniperus scopulorum trees may also be present. Arctostaphylos patula dominates the moderate to sparse shrub layer. Others shrub species present may include Amelanchier utahensis, Ceanothus spp., Cercocarpus intricatus, Cercocarpus montanus, Fraxinus anomala, Juniperus communis, Mahonia repens, Purshia tridentata, Quercus gambelii, Symphoricarpos oreophilus, and Tetradymia canescens. The sparse herbaceous layer (<20% cover) is primarily composed of graminoids such as Carex rossii, Achnatherum hymenoides (= Oryzopsis hymenoides), Elymus elymoides, Leymus salinus (= Elymus salinus), and Poa fendleriana. Forbs are sparse and may include Achillea millefolium, Balsamorhiza sagittata, Heterotheca villosa, and Eriogonum racemosum.

Dynamics:  No Data Available

Environmental Description:  This woodland association has been reported from the Colorado Plateau and eastern Sierra Nevada, from mountains and plateaus in Colorado, Utah and California. Elevation ranges from 1770-2600 m (5800-8500 feet). Sites are dry, warm, mid- to lower slopes, benches and ridgetops often with southerly aspects. Slopes are level to moderate. Soils are typically sandy loams but vary from sand to silt loam. Parent materials are sandstone, limestone and occasionally basalt and andesite.

Geographic Range: This coniferous woodland association has been reported from the Colorado Plateau (western Colorado and southern Utah) and the eastern Sierra Nevada.

Nations: US

States/Provinces:  AZ, CA?, CO, NV, UT




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G5

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? Pinus ponderosa / Arctostaphylos patula Habitat Type (Youngblood and Mauk 1985)
? Pinus ponderosa / Arctostaphylos patula Habitat Type (Roberts et al. 1992)
? Pinus ponderosa / Arctostaphylos patula Plant Association (Johnston 1987)

Concept Author(s): K.A. Schulz

Author of Description: K.A. Schulz and J. Coles

Acknowledgements: No Data Available

Version Date: 11-03-05

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