Page author: David Giblin
Hydrilla verticillata
hydrilla, water-thyme

Distribution: Occurring west of the Cascades crest in Washington, where known only from King County; Washington, California, and in the southern and eastern U.S.

Habitat: Ponds, lakes, and slow-moving streams at low elevation.

Origin: Introduced from Eurasia

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Wind


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Accepted Name:
Hydrilla verticillata (L. f.) Royle
Publication: Illustrations of the Botany ... of the Himalayan Mountains ... 1: 376. 1839.

Synonyms & Misapplications:
Serpicula verticillata L. f.
Additional Resources:

PNW Herbaria: Specimen records of Hydrilla verticillata in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Hydrilla verticillata checklist entry

OregonFlora: Hydrilla verticillata information

E-Flora BC: Hydrilla verticillata atlas page

CalPhotos: Hydrilla verticillata photos

3 photographs:
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