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© 2009 Barry Rice (CalPhotos)


© 2006 Louis-M. Landry (CalPhotos)

Eichhornia crassipes (P. Martius) Solms-Laubach
common water hyacinth, water hyacinth
Eichhornia crassipes, a monocot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

The California Invasive Plant Council (Cal-IPC) lists plants that cause serious problems in native ecosystems. In the 2006 list, Cal-IPC classifies the statewide impact of Eichhornia crassipes as high -- ALERT (plant profile).

Community: wetland-riparian
Wetlands:occurs almost always under natural conditions in wetlands [U.S. Fish & Wildlife Service.]
Elevation: between 0 and 656 feet
Family: Pontederiaceae     (JM2 Treatment)
Name Status:
Recognized as current in JM2 + PLANTS + JM93
PLANTS: Eichhornia speciosa
PLANTS: Piaropus crassipes
Distribution in California by County: See a detailed Distribution Grid of this plant in California.
A shaded county indicates that there are one or more ocurrence records of this plant within the county.

Hover the mouse over the map to see county names. Click to view records from that county.

  There are specimen records from this county in an herbarium.
  There are documented records, vouchered or confirmed by an expert.
  There are reported records.
  There are reported records available indirectly (eg. in botanical literature).
Records by County, with approximate record counts in the form: TOTAL / CCH.   Click county name to view records.
 Information about  Eichhornia crassipes  from other sources:
Photos on CalPhotos / Picasa / Flickr

Photos or website references on Google


1993 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley

Original Publication citation. on the International Plants Names Index

Search (Flora of North America)

    Calflora: Information on California plants for education, research and conservation, based on data contributed by dozens of public and private institutions and individuals, including the Consortium of Calif. Herbaria. [web application]. 2012. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 10, 2012).

    Note that the information on this page comes from diverse sources, and that none of the links are sponsored.

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