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Abies lasiocarpa - Picea engelmannii / Arnica cordifolia Forest | NatureServe Biotics 2019
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Name: Abies lasiocarpa - Picea engelmannii / Arnica cordifolia Forest
Reference: NatureServe Biotics 2019
Description: This cool and moist forest association is known from northern Nevada, eastern Idaho, southwestern and central Montana, and western and north-central Wyoming. This is a cool and moist forest on gentle to moderate terrain, bench-like uplands, often on north-facing slopes but can occur on any aspect. It occurs between 2105 and 2900 m (6900-9500 feet) in elevation. The overstory canopy is thick with mostly <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> in the overstory canopy. <i>Pinus contorta</i> and <i>Pseudotsuga menziesii</i> are often present. Shrub cover is low and scattered, with the exception of <i>Shepherdia canadensis</i>, which can have as much as 10% cover, and was indicated as present in a least some plots by all authors. Other shrubs that may be present include <i>Ribes montigenum, Paxistima myrsinites</i>, and <i>Rosa</i> spp. The herbaceous layer is not abundant; <i>Arnica cordifolia</i> is the most consistently present forb with about 10-15% cover on average. A wide variety of other herbaceous species may be present, but none with any consistency. <i>Arnica latifolia</i> can be difficult to distinguish from <i>Arnica cordifolia</i>. The leaves on flowering stems of <i>Arnica latifolia</i> are largest toward the middle and are short-petioled to sessile, whereas those of <i>Arnica cordifolia</i> are largest near the base and are distinctly petiolate. <i>Arnica latifolia</i> is restricted to relatively moist sites; <i>Arnica cordifolia</i> occurs on many dry forest sites. 
Accession Code: urn:lsid:vegbank.org:commConcept:29207-{084511B2-B7EE-4E5E-A251-5EF18848AF97}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 03-Jan-2005 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.684138 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000298
  Translated: Subalpine Fir - Engelmann Spruce / Heartleaf Leopardbane Forest
  Scientific: Abies lasiocarpa - Picea engelmannii / Arnica cordifolia Forest
(convergence) and Synonyms:
(similar) Abies lasiocarpa - Picea engelmannii / Arnica cordifolia Forest
(similar) CEGL000298
(similar) Abies lasiocarpa / Arnica cordifolia Forest