Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Commelinales
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Learn more about Water Hyacinth from the Vascular Plants of North Carolina.
SYNONYMOUS WITH Flora of North America
SYNONYMOUS WITH Total evidence phylogeny of Pontederiaceae (Commelinales) ... (Pellegrini, et al., 2018)
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 039-01-001:
Eichhornia crassipes FAMILY Pontederiaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
To see larger pictures, click or hover over the thumbnails.
Bruce A. Sorrie bas_e_crassipes1_bol
Leaves spade-shaped and curled upward on sides. Roots feathery, floating, per Field Guide to Aquatic Plants of Alabama (Lovell, 2007).
COMPARE aquatic plants
Bruce A. Sorrie bas_e_crassipes2_bol
Perianth 6-parted, upper segment larger with yellow blotch at center, per Flora of China.
Flora of North America
Total evidence phylogeny of Pontederiaceae (Commelinales) ... (Pellegrini, et al., 2018)
Manual of the Southeastern Flora (Small, 1933, 1938)
Floating aquatic (the roots floating); Forb
Habitat: Ponds, ditches, sluggish water, per Weakley's Flora
Non-native: tropical America
Uncommon in Coastal Plain but can be an aggressive aquatic weed (rare in Piedmont)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
This plant is causing problems in natural areas outside its native range, according to authorities such as:
- Alabama Invasive Plant Council, 2012
- Brooklyn Botanic Garden
- Georgia Exotic Pest Plant Council, 2006
- Kentucky Exotic Pest Plant Council, 2013
- SC Department of Natural Resources Aquatic Nuisance Species List, 2003
- SC List of Regulated Pest Plant Species, 2017
- Tennessee Exotic Pest Plant Council, 2009
- Virginia Department of Conservation and Recreation, 2014
Blue, light purple
4 petaloid perianth segments, in two whorls
6 stamens (3 long, 3 short)
Inflorescence a spike
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to Aquatic Plants of Alabama (Lovell, 2007) p62
- Guide to the Wildflowers of SC (Porcher & Rayner, 2001) p394
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p399
- Wildflowers of the Carolina Lowcountry (Porcher, 1995) p111
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p159
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p417
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".
Or try alternate spellings: If "wooly" doesn't work, try "woolly" or just "wool".