Synonyms
Tithymalus commutatus (Engelm. ex A.Gray) Klotzsch & Garcke
Euphorbia austrina (Small) Jabl.
Euphorbia commutata var. erecta Norton
Tithymalus commutatus var. erectus (Norton) Small
Galarhoeus commutatus var. erectus (Norton) Small
Euphorbia ohiotica Steud. & Hochst. ex Boiss.
Galarhoeus austrinus (Small) Small
Galarhoeus commutatus (Engelm. ex A.Gray) Small ex Rydb.
Tithymalus austrinus Small