Elodea canadensis Michx.

Canadian waterweed, pondweed
Elodea_canadensis_01 Elodea_canadensis_02

Description 1

A bushy, aquatic, submerged, perennial, dioecious plant with white roots that are feathery and not branched. Large, flexible stalks that are 20-30 cm long, branched and very dense. Three whorls with sessile, oblong-linear leaves that are a dark, translucent green colour with a softly jagged edge. Female flowers with sepals and petals (white) of some 2-3 mm.

Biology 1

Flowers from May to August. In Europe there are only female specimens, thus they reproduce asexually by stalk fragments that take root. They do not cope well with pollution and they prefer eutrophic, calcareous water with a PH balance between 6.5-10 and a temperature between 10-25 oC.

Habitat 1

They prefer still or slow flowing water, and do not cope with pollution or a lot of shade. They can live in considerable depth, up to 14 metres.

Sources 1

Spanish Catalogue of Exotic Invasive Species and Document sheets of the Exotic Invasive Species Act 630/2013 (GEIB)

Spanish Catalogue of Exotic Invasive Species - Flora 1

http://www.mapama.gob.es/es/biodiversidad/temas/conservacion-de-especies/especies-exoticas-invasoras/ce_eei_flora.aspx

Fuentes y Créditos

  1. Adaptado por INVASORES - administrador de un trabajo de (c) cartotragsatec, algunos derechos reservados (CC BY), http://natusfera.gbif.es/guide_taxa/1750

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