Hesperocyparis forbesii Woodland Alliance
Tecate cypress stands

USDA Ecological Section Map

Summary Information

  • Primary Life FormTree
  • Elevation300-1450 m
  • State RarityS2.2
  • Global RarityG2
  • DistributionUSA: CA. Baja California, Mexico (USDA Plants) (TJM2)
  • Endemic to CaliforniaNo
  • Endemic to California Floristic Province and DesertsYes
  • Date Added1995/11/01

Characteristic Species

Hesperocyparis forbesii is dominant in the tree canopy or emergent above a shrub canopy with Adenostoma fasciculatum, Arctostaphylos glandulosa, Arctostaphylos glauca, Arctostaphylos otayensis, Ceanothus crassifolius, Ceanothus cuneatus, Ceanothus greggii, Ceanothus ×otayensis, Chamaebatia australis, Dendromecon rigida, Helianthemum scoparium, Malosma laurina, Pickeringia montana, Quercus berberidifolia, Salvia munzii and Xylococcus bicolor.

Vegetation Layers

Trees < 10 m; canopy open to intermittent. Shrub layer is intermittent to continuous. Herbaceous layer is sparse to intermittent.

Membership Rules

  • Hesperocyparis forbesii > 30% relative cover (requires testing with data).


Dry, exposed hillsides and ridgetops, stream banks, and arroyos. Soils are deep or shallow over alkaline clay, sandstone, granitic, mafic, and ultramafic substrates.

Other Habitat, Alliance and Community Groupings

MCV (1995) Tecate cypress stands
NVCS (2009) Not treated
Calveg Tecate cypress
Holland Southern interior cypress forest
Munz Chaparral
WHR Closed-cone pine-cypress
CDFW CA Code 81.607.00

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