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Celtis laevigata var. reticulata / Toxicodendron rydbergii Woodland | Western Ecology Working Group of...
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Name: Celtis laevigata var. reticulata / Toxicodendron rydbergii Woodland Reference: Western Ecology Working Group of... Description: This is a unique association found only in Hells Canyon, Oregon and Idaho, generally in moist areas below basalt rims on river terraces. The sites are generally up against the bottom of a basalt rim or steep rockfall, adjacent to or within a riparian area. Occurrences are found between 1290-1770 feet elevation, on flats or moderate slopes (although the association will occasionally creep up steep, moist rockfalls and has at one site been found on a 40% slope). The tall-shrub or short-tree layer is dominated by Celtis laevigata var. reticulata (61% average cover). A shorter layer of shrubs is dominated by Toxicodendron rydbergii (= Rhus radicans) (20% cover), with other riparian shrubs usually found, including Philadelphus lewisii, Holodiscus discolor, Sambucus caerulea, or occasionally Cornus sericea, Symphoricarpos albus, Frangula purshiana (= Rhamnus purshiana), Crataegus douglasii, Amelanchier alnifolia, and Prunus virginiana. The understory in these stands is quite variable, with forbs and grasses dominating. Non-native grasses and forbs (Bromus tectorum, Bromus sterilis, Bromus commutatus, Anthriscus caucalis, Rubus discolor) are important at sites with heavy grazing, while native forbs and grasses (Pseudoroegneria spicata, Elymus glaucus, Viola canadensis, Artemisia ludoviciana) are found in the few areas not impacted by cattle. This association is distinguished from similar types by a lack of an herbaceous understory.  Accession Code: VB.CC.22804.CELTISLAEVIGATA Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 21-Oct-2002 to: 17-Nov-2014
	status: accepted Community's Parent: Celtis laevigata var. reticulata Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Netleaf Hackberry / Western Poison-ivy Woodland   UID: ELEMENT_GLOBAL.2.686272 NatureServe Explorer   Code: CEGL003451   Scientific: Celtis laevigata var. reticulata / Toxicodendron rydbergii Woodland (convergence) and Synonyms: (undetermined) Celtis laevigata var. reticulata / Toxicodendron rydbergii Woodland