Holodiscus series
Section: shrb Series Dominated by Shrubs
Series formation: 
Series height:<1 m
Series canopy cover:i
Series ground layer:s
Elevation range (lower):700
(upper):   2800
Wetland information:[not available]
Upland information: Uplands:ridges, upper slopes, may be steep, talus. Soils skeletal. Texture loam or sand, may be rocky.
Reference:Sawyer & Thornburgh (1977b).
Comments:This series is common on mountain ridges and slopes with thin soils. Ocean spray and rock-spiraea do not occur in the same stands as they are geographically segregated. This series is found in the montane, subalpine, and alpine zones. Unlike many montane chaparral, these stands are self-perpetuating. This series does not include areas where shrubs are scattered in forest understories. The treatment of Holodiscus varies among manuals. The Jepson Manual recognizes two species, ocean spray [ H. discolor ; not recognizing three varieties or H. boursieri ] and rock-spiraea [ H. microphyllus ]. Two varieties are recognized for rock-spiraea, one H. m. var. glabrescens m-NorCo, ModP, WarR and H. m. var. microphyllus [including H. m. var. sericeus ] SN, TraR, PenR, SN. These species are commonly misidentified [ see The Jepson Manual ]. Keeler-Wolf (1990e) qualitatively describes rock-spiraea stands at Cedar Basin candidate RNA in Siskiyou Co. su-KlaR; at Antelope Creek Lakes candidate RNA in Siskiyou Co. su-CasR.
Plot based descriptions:Taylor & Teare (1979a), Keeler-Wolf (1990e) define one association at Man-zanita Creek candidate RNA in Trinity Co., Sawyer & Thornburgh (1977b) one association on granite in Siskiyou and Trinity Cos. su-KlaR; Burke (1982) two associations at Rae Lakes rea, King's Canyon National Park in Fresno Co. su-SN.
Series Association:Burke (1982): Rock-spiraea/Suksdorf monkey flower association, Western needlegrass-nude buckwheat association. Sawyer & Thornburgh (1977b): Ocean spray/greenleaf manzanita association [as Pinus albicaulis/Holodiscus microphyllus type]. Taylor & Teare (1979a): Ocean spray/wedgeleaf keckiella association [as Holodiscus microphyllus/Penstemon corymbosus alliance].
FormationMixed evergreen-deciduous shrubland
Geographical associated regions: View Regions for: Holodiscus series
Representative Image: View Representative Photograph for: Holodiscus series
Common species: View common species for: Holodiscus series

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