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Azolla (filiculoides, microphylla) Aquatic Vegetation | NatureServe Biotics 2019
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Name: Azolla (filiculoides, microphylla) Aquatic Vegetation
Reference: NatureServe Biotics 2019
Description: Habitat is low-elevation eutrophic ponds, lakes, and sloughs with little water movement. Species of <i>Azolla</i> occur throughout northwestern Oregon, but stands extensive enough to be considered occurrences of this association are most common in low-elevation areas in the Coast Range and Willamette Valley. They typically form nearly monotypic green or reddish mats that float on the surface of lakes and ponds, often growing so dense that no open water is visible. <i>Azolla</i> needs open water to proliferate in winter and spring, but it tolerates being stranded on mudflats when shallow pools dry out in summer. Mudflat sites are not uncommon, particularly on large floodplains, and in this habitat the <i>Azolla</i> mat develops a peculiar lumpy surface with varied microtopography. Elements of the <i>Lemna minor</i> association (<i>Lemna, Spirodela, Ricciocarpos</i>) may often be intermixed with <i>Azolla</i> but are always subordinate to <i>Azolla</i>. Eutrophic conditions favored by this association may be enhanced by enriched runoff in agricultural or urban landscapes. 
Accession Code: urn:lsid:vegbank.org:commConcept:31917-{F2F45916-EAEF-411D-AB30-2CEC328A085C}
Plot-observations of this Community Concept: 3
      Party Perspective according to: NatureServe (organization)
Perspective from: 10-Jun-2006 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.688612 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL003017
  Translated: (Pacific Mosquito Fern, Mexican Mosquito Fern) Aquatic Vegetation
  Scientific: Azolla (filiculoides, microphylla) Aquatic Vegetation
(convergence) and Synonyms:
(similar) CEGL003017
(similar) Azolla (filiculoides, mexicana) Herbaceous Vegetation
(similar) Azolla (filiculoides, mexicana) Herbaceous Vegetation