Alternanthera philoxeroides
(Mart.) Griseb.
Alligator weed, Alligatorweed
Alternanthera philoxeroides is a perennial herb that is not native to California.
Cal-IPC rating: high
Bloom Period
one or more occurrenceswithin a 7.5-minute quadrangle
The blue points on the map indicate observations in Calflora.
Click on the map to view observations within a specific county.
Click on the map to view observations within a specific county.
Jepson eFlora section:
eudicot
USDA PLANTS group:
Dicot
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[plants.ifas.ufl.edu] South America Native, Habitat, Habits: Native to: South America. Alligatorweed was accidentally introduced into Florida in 1894 in ships' ballast water and can now be found growing throughout the state. This rooted perennial plant can grow in various habitats, although it is usually found in water. It forms sprawling mats over deep rivers or along shorelines and can be a pest on land. (link added by Mary Ann Machi)
