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Eriogonum ovalifolium var. depressum Dwarf-shrubland | Western Ecology Working Group of...
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Name: Eriogonum ovalifolium var. depressum Dwarf-shrubland Reference: Western Ecology Working Group of... Description: This association has only been described from the northern edge of the Snake River Plain of southern Idaho. It occurs in a semi-arid region of relatively recent 'plains' volcanic activity. This is a very sparsely vegetated, dwarf-shrubland association. Total cover of all plant layers is typically less than 5% in mid-summer, though cover may be higher in the spring due to the presence of annuals. The most important species is <i>Eriogonum ovalifolium var. depressum</i>, a cespitose, evergreen perennial, forming mats 3-4 dm across. This species rapidly develops a deep root system (up to 1.2 m deep), allowing it to colonize the light, porous cinders. Several perennial forbs are common into July, including <i>Phacelia hastata, Cryptantha interrupta, Machaeranthera canescens, Chaenactis douglasii, Stephanomeria spinosa</i>, and <i>Stephanomeria minor (= Stephanomeria tenuifolia)</i>. The annuals <i>Mimulus nanus</i> and <i>Mimulus suksdorfii</i> are present during the spring and early summer before soil moisture is depleted, as are the perennials <i>Allium simillimum</i> and <i>Lewisia rediviva</i>. All major species of this association are found within the inner canopy of <i>Eriogonum ovalifolium var. depressum</i>. This is most likely due to higher accumulations of seeds and fine materials captured by the <i>Eriogonum</i> mats, and to relatively high moisture, total nitrogen and available phosphorus occurring under the canopy.  Accession Code: VB.CC.33675.CEGL001401 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685916 NatureServe Explorer   Common: Cushion Buckwheat Cinder Garden   Translated: Cushion Buckwheat Dwarf-shrubland   Scientific: Eriogonum ovalifolium var. depressum Dwarf-shrubland   Code: CEGL001401