Key 3: Series dominated by trees

Key Characteristics

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1 One species dominates tree canopy 2
1' No single species dominates tree canopy 3

    2 A conifer species dominates tree canopy

Key to forests where one conifer species dominates p. 214

    2' A single non-conifer species dominates tree canopy

Key to forests where one non-conifer dominates p. 216
3 Two species similarly important in tree canopy Key to forests where two species are similarly important p. 217
3' More than two species similarly important in tree canopy Key to forests where more than two species are similarly important p. 218
Key to forests where one conifer species dominates  
1 A Chamaecyparis dominant Port Orford-cedar series
  See unique stands section p. 325
1' A Chamaecyparis not dominant 2

    2 A Pseudotsuga dominant

Bigcone Douglas-fir series
  Douglas-fir series

    2' A Pseudotsuga not dominant

3
3 A Picea dominant Engelmann spruce series
Sitka spruce series
3' A Picea not dominant 4

    4 A Tsuga dominant

Mountain hemlock series
  Western hemlock series

    4' A Tsuga not dominant

5
5 Incense-cedar dominant Incense-cedar series
5' Incense-cedar not important 6

    6 Giant sequoia dominant

Giant sequoia series

    6' Giant sequoia not dominant

7
7 Redwood dominant Redwood series
7' Redwood not dominant 8

    8 Cypress or juniper dominant

9

    8' A fir or pine dominant

10
9 A cypress dominant cypress woodlands
  McNab cypress series
  Pygmy cypress series
  Sargent cypress series
  See unique stands section p. 325
9' A juniper dominant juniper woodlands
  California juniper series
  Mountain juniper series
  Utah juniper series
  Western juniper series

    10 A fir dominant

fir forests
  Grand fir series
  Red fir series
  Santa Lucia fir series
  Subalpine fir series
  White fir series
  See unique stands section p. 325

    10' A pine dominant

11
11 A closed-cone pine present closed-cone pine forests
  Beach pine series
  Bishop pine series
  Coulter pine series
  Knobcone pine series
  Monterey pine series
  See unique stands section p. 325
11' A closed-cone pine absent 12

    12 A pinyon dominant

pinyon woodlands
  Parry pinyon series
  Singleleaf pinyon series
  See unique stands section p. 325

    12' A pinyon not dominant

13
13 2- leaved pines dominant two-leaved pine forests
  Beach pine series
  Bishop pine series
  Lodgepole pine series
  See unique stands section p. 325
13' 3 or 5-leaved pines dominant 14

    14 3-leaved pines dominant

three-leaved pine forests
  Coulter pine series
  Foothill pine series
  Jeffrey pine series
  Knobcone pine series
  Monterey pine series
  Ponderosa pine series
  Washoe pine series
  See unique stands section p. 325

    14' 5-leaved pines dominant

five-leaved pine forests
  Bristlecone pine series
  Foxtail pine series
  Limber pine series
  Western white pine series
  Whitebark pine series
  See unique stands section p. 325
Key to forests where a hardwood dominates  
1 Emergent trees present over desert scrub species desert woodlands
  Nolina series [see shrub series]
  Fan palm series
  Joshua tree series [see shrub series]
  Mesquite series
  Mojave yucca series [see shrub series]
  Ocotillo series [see shrub series]
  Foothill palo verde-saguaro series [see shrub series]
  See unique stands section p. 325
1' Desert scrub species not present 2

    2 Tree leaves deciduous

3

    2' Tree leaves evergreen

8
3 An oak dominant deciduous forests and woodlands
  Black oak series
  Blue oak series
  Oregon white oak series
  Valley oak series
3' An oak not dominant 4

    4 An Alnus dominant

Red alder series
  White alder series

    4' An Alnus not dominant

5
5 A Populus dominant Aspen series
  Black cottonwood series
  Fremont cottonwood series
5' A Populus not dominant 6

    6 A Juglans dominant

California walnut series
  See unique stands section p. 325

    6' A Juglans not dominant

7
7 A Salix dominant willow thickets
  Arroyo willow series
  Black willow series
  Hooker willow series
  Pacific willow series
  Red willow series
  Sitka willow series
7' A Salix not dominant deciduous woodlands
  California buckeye series
  California sycamore series
  Mesquite series

    8 An oak dominant

evergreen oak forests and woodlands
  Blue oak series
  Canyon live oak series
  Coast live oak series
  Engelmann oak series
  Interior live oak series
  Island oak series
  Tanoak series

    8' An oak not dominant

9
9 A Cercocarpus important mountain-mahogany woodlands
  Birchleaf mountain-mahogany series
  Curlleaf mountain-mahogany series
9 A Cercocarpus not important evergreen forests
  California bay series
  Eucalyptus series
  Fan palm series
  Tanoak series
  See unique stands section p. 325
Forests where two species are similarly important  
1 A Populus important cottonwood forests
  Aspen series
  Black cottonwood series
  Fan palm series
  Fremont cottonwood series
1' A Populus not important 2

    2 California buckeye important

California buckeye series

    2' California buckeye and hollyleaf cherry not important

3
3 Blue oak important Blue oak series
3' Blue oak and foothill pine not important 4

    4 A mountain-mahogany and conifer species important

mountain-mahogany woodlands
  Birchleaf mountain-mahogany series
  Curlleaf mountain-mahogany series

    4' A mountain-mahogany and conifer species not important

5
5 A live oak important mixed live oak forests
  Bigcone Douglas-fir - canyon live oak series
  Black oak series
  Canyon live oak series
  Coast live oak series
  Coulter pine-canyon live oak series
  Engelmann oak series
  Santa Lucia fir series
5' Canyon live oak not important 6

    6 McNab cypress and Sargent cypress important

Sargent cypress series

    6' McNab and Sargent cypress not important

7
7 Douglas-fir or white fir important mixed forests and woodlands
  Black oak series
  Douglas-fir series
  Douglas-fir - ponderosa pine series
  Douglas-fir - tanoak series
  Port Orford-cedar series
  Redwood series
7' Douglas-fir or white fir not important 8

    8 Ponderosa pine important

Black oak series
  Jeffrey pine-ponderosa pine series
  Ponderosa pine series

    8' Ponderosa pine not important

9
9 Singleleaf pinyon important Singleleaf pinyon-Utah juniper series
9' Singleleaf pinyon not important Giant sequoia series
  Port Orford-cedar series
  Sitka spruce series
Forests where more than two species are similarly important  
1 Non-conifer species not important Mixed forests and woodlands
  Blue palo verde-ironwood-smoke tree series
  Mixed oak series
  Mixed willow series
1' Conifer species important 2

    2 Giant sequoia important

Giant sequoia series

    2' Giant sequoia not important

3
3 Douglas-fir, incense-cedar, Jeffrey pine, ponderosa pine, sugar pine or white fir similarly important Mixed conifer series
3' Douglas-fir, incense-cedar, Jeffrey pine, ponderosa pine, sugar pine or white fir not similarly important 4

    4 Brewer spruce present

See unique stands section p. 235

    4' Brewer spruce absent

Mixed subalpine forest series

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