Jeffrey pine-ponderosa pine series
Section: tree Series Dominated by Trees
Series formation: 
Series height:<60 m
Series canopy cover:io
Series ground layer:sa
Elevation range (lower):1000
(upper):   2400
Wetland information:[not available]
Upland information: Uplands:slopes, all aspects; raised, benches and terraces. Soils well-drained. The national inventory of wetland plants (Reed 1988) lists ponderosa pine as a FACU. Jeffrey pine is not listed.
Reference:Jeffrey pine and ponderosa pine ranges in CA (Griffin & Critchfield 1972); silvics (Jenkinson 1990), (Oliver & Ryker 1990). Paysen et al. (1980), Rundel (1977), Sawyer et al. (1977), Sawyer & Thornburgh (1977), Thorne (1977), Vasek & Thorne (1977).
Comments:Stands of this series differ from the Jeffrey pine and Ponderosa pine series, where one species dominates. Here both are equally important [ see Jeffrey pine series, Ponderosa pine series]. Stands of all three series occur in Cis-CA and Trans-CA in ne. Nor-CA.
Plot based descriptions:Smith (1994) describes seven associations [as yellow pine series] in Lassen, Plumas, Tahoe National Forests m-CasR, ModP, m-SN.
Series Association:Smith (1994): Jeffrey pine-ponderosa pine/arrowleaf balsam root association, Jeffrey pine-ponderosa pine/antelope bitterbrush/Idaho fescue association, Jeffrey pine-ponderosa pine/antelope bitterbrush/Idaho fescue/granite association, Jeffrey pine-ponderosa pine/Modoc coffeeberry/one-sided bluegrass association, Jeffrey pine-ponderosa pine/huckleberry oak association, Jeffrey pine-ponderosa pine/Columbia needlegrass/Oregon ash association, Jeffrey pine-ponderosa pine/creeping snowberry/mule's ears association.
FormationMixed needle-leafed evergreen-cold deciduous forest
Geographical associated regions: View Regions for: Jeffrey pine-ponderosa pine series
Representative Image: View Representative Photograph for: Jeffrey pine-ponderosa pine series
Common species: View common species for: Jeffrey pine-ponderosa pine series

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