Habitat: Growing in moist, sandy-loamy roadside soil. Found with A. hallii and A. alternifolium
Locality: McIntosh Co. --Along U.S. 17, 7.2 mi. N. of Darien, near King Swamp Creek culvert.
Habitat: Growing on sandy, loamy soil among grass with A. hallii, A. alternifolium, A. tenerrimum and A. ohioense.
Locality: McIntosh Co. --Along U.S. 17, 7.2 mi. N. of Darien, near culvert crossing Kings Swamp creek.
Habitat: Growing on wet sand along roadside ditch, with A. minus.
Locality: Volusia Co. --along U.S. 17, 4.2 mi. S. of jct. U.S. 17 and Fla. 40 in Barberville, and N. of DeLeon Springs.