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Pinus ponderosa / Physocarpus malvaceus Forest | NatureServe Biotics 2019
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Name: Pinus ponderosa / Physocarpus malvaceus Forest
Reference: NatureServe Biotics 2019
Description: This plant association is known from stands within the Idaho Batholith, Bitterroot Mountains, and Palouse Prairie ecoregional sections. The association is found on moderately steep northwest- to northeast-facing slopes, below 915 m (3000 feet) elevation. The natural fire disturbance regime is one of frequent, low-intensity fire events. <i>Pinus ponderosa / Symphoricarpos albus</i> is found on adjacent hotter, drier south-facing slopes. <i>Pseudotsuga menziesii / Physocarpus malvaceus</i> is adjacent on more moist sites. <i>Pinus ponderosa</i> occurs with a structurally and compositionally diverse understory shrub layer. <i>Symphoricarpos albus, Spiraea betulifolia</i>, and <i>Mahonia repens</i> form an understory low-shrub canopy. <i>Physocarpus malvaceus</i> or <i>Holodiscus discolor</i> dominate the understory tall-shrub layer; <i>Ceanothus sanguineus, Philadelphus lewisii, Prunus virginiana</i>, and <i>Amelanchier alnifolia</i> are often associated. Highly consistent herbaceous species include <i>Galium boreale, Moehringia macrophylla, Osmorhiza berteroi, Erythronium grandiflorum, Calamagrostis rubescens</i>, and <i>Carex geyeri</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:29098-{2F9C4D25-DDA4-4DF4-967E-2C6D5FD1D354}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687498 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000189
  Translated: Ponderosa Pine / Mallow Ninebark Forest
  Scientific: Pinus ponderosa / Physocarpus malvaceus Forest
(convergence) and Synonyms:
(similar) Pinus ponderosa / Physocarpus malvaceus Forest
(similar) CEGL000189
(similar) Pinus ponderosa / Physocarpus malvaceus Forest