Taxon  Report   4279 
Hydrilla verticillata  (L.f.) Royle
Hydrilla,  Waterthyme
Hydrilla verticillata
© 2001 CDFA
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Hydrilla verticillata
© 2001 CDFA
Hydrilla verticillata
© 2001 CDFA
Hydrilla verticillata, a monocot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: High

Hydrilla verticillata is classified by the U.S. Federal Government as a NOXIOUS WEED. [USDA 2000]

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one or more occurrences
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Plant Characteristics
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Bloom Period
Hydrilla verticillata
© 2001 CDFA
Genus: Hydrilla
Wetlands: Occurs in wetlands
Distribution by County 

Add an Observation of  Hydrilla verticillata

Name Status:
Accepted by TJM2 + PLANTS + JM93
More information about  Hydrilla verticillata
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


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website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Mar 24, 2018).

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