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Eriogonum ovalifolium var. depressum Dwarf-shrubland | NatureServe Biotics 2019
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Name: Eriogonum ovalifolium var. depressum Dwarf-shrubland Reference: NatureServe Biotics 2019 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, Pleiacanthus spinosus</i>, and <i>Stephanomeria minor</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: urn:lsid:vegbank.org:commConcept:30310-{E4B475DD-4417-4E44-817D-133003A53C8F} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 21-Sep-1993 to: ongoing
	status: accepted Community's Parent: Eriogonum ovalifolium - Fallugia paradoxa - Andropogon hallii Lava & Cinder Sparse Vegetation Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685916 NatureServe Explorer   Code: CEGL001401   Translated: Cushion Buckwheat Dwarf-shrubland   Common: Cushion Buckwheat Cinder Garden   Scientific: Eriogonum ovalifolium var. depressum Dwarf-shrubland (convergence) and Synonyms: (similar) Eriogonum ovalifolium var. depressum Dwarf-shrubland (similar) CEGL001401 (similar) Eriogonum ovalifolium var. depressum Dwarf-shrubland