https://plants.usda.gov/home/plantProfile?symbol=ALPH

USDA. NRCS. National Plant Data Center.

https://plantwiseplusknowledgebank.org/doi/10.1079/pwkb.species.4403

CABI. PlantwisePlus Knowledge Bank.

https://www.texasinvasives.org/plant_database/detail.php?symbol=ALPH

TexasInvasives.org.

https://www.galvbayinvasives.org/invasive/P-003

Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC).

https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=101502

USDA. ARS. National Genetic Resources Program. GRIN-Global.

https://profiles.ala.org.au/opus/weeds-australia/profile/Alternanthera%20philox…

Centre for Invasive Species Solutions; Atlas of Living Australia; Australian Government. Department of Agriculture, Water and the Environment.

Designated Weed of National Significance

https://www.youtube.com/watch?v=AZXuTRTUYZI

Google. YouTube; University of Florida. IFAS. Center for Aquatic and Invasive Plants.