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Floating Water Primrose
Floating Primrose-Willow

Ludwigia peploides

Ludwigia peploides, Photo © by Michael Plagens

Photographed at Tres Rios Wetland, City of Phoenix, wastewater treatment facility, Arizona. Sept. 2009. The leaves of this plant are chewed by adults and larvae of the Primrose Flea Beetle (Chrysomelidae, Altica).

PERENNIAL: Herbaceous, mat-forming perennial.

FLOWERS: Usu. five bright yellow petals, ten stamens. Blooming summer and fall.

LEAVES: Lance shaped leaves reminiscent of willow leaves. Alternate on stems, dark green with prominent veins.

RANGE: Strictly a wetland plant normally growing in shallow water but rooted in soil below. These wetland habitats in the Sonoran Desert are now mostly created by man for water reclamation projects where the water has a high nutrient content that is favored by this plant.

FRUIT: Cylindrical pod develops below flower and is hard with five or so angles. Point downwards on maturing.


Onagraceae -- Evening Primrose Family

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Copyright Michael J. Plagens, 1999-2009