Hesperocyparis sargentii Woodland Alliance
Sargent cypress woodland

USDA Ecological Section Map

Summary Information

  • Primary Life FormTree
  • Elevation200-900 m
  • State RarityS3.2
  • Global RarityG3
  • DistributionUSA: CA (NatureServe) (Calflora)
  • Endemic to CaliforniaYes
  • Endemic to California Floristic Province and DesertsYes
  • Date Added1995/11/01

Characteristic Species

Hesperocyparis sargentii is dominant in the tree canopy with Hesperocyparis macnabiana, Pinus attenuata, Pinus sabiniana, Pseudotsuga menziesii, Quercus wislizeni and Umbellularia californica.

Vegetation Layers

Trees < 15 m; canopy is open to intermittent. Shrub layer is sparse to intermittent. Herbaceous layer is sparse.

Membership Rules

  • Callitropsis sargentii > 50% relative cover in the tree canopy (Evens and Kentner 2006).

Habitats

Stream benches and terraces, open slopes, and ridges. Soils are usually sterile serpentine or other ultramafic substrates.

Other Habitat, Alliance and Community Groupings

MCV (1995) Sargent cypress series
NVCS (2009) Cupressus sargentii woodland alliance
Calveg Sargent cypress
Holland Northern interior cypress forest
Munz Closed-cone pine forest
WHR Closed-cone pine-cypress
CDFW CA Code 81.500.00

National Vegetation Classification Hierarchy

Formation Class Mesomorphic Tree Vegetation (Forest and Woodland)
Formation Subclass Temperate Forest
Formation Warm Temperate Forest
Division Madrean Forest and Woodland
Macro Group California Forest and Woodland
Group Californian evergreen coniferous forest and woodland