Euphorbia commutata var. erecta
| Euphorbia commutata Engelmann ex A. Gray, var. erecta Norton, N. Amer. Euphorbia 35. 1899. | | TYPE: FLORIDA: Clay Co.: Hibernia, Mar 1869, Canby s.n. (lectotype: GH; isolectotypes: MO, NY). Lectotypified by Geltman et al., J. Bot. Res. Inst. Texas 5: 146. 2011. |
Euphorbia ohiotica
| Euphorbia ohiotica Steudel & Hochstetter ex Boissier, in de Candolle, Prodr. 15(2): 142. 1862. | | TYPE: SOUTH CAROLINA: Without data, May 1841, Rugel s.n. (lectotype: G). Lectotypified by Geltman et al., J. Bot. Res. Inst. Texas 5: 146. 2011. |
Galarhoeus austrinus
| Galarhoeus austrinus (Small) Small, Man. S.E. Fl. 801, 1505. 1933. | BASIONYM: Tithymalus austrinus Small 1903. | |
Galarhoeus commutatus
| Galarhoeus commutatus (Engelmann ex A. Gray) Small ex Rydberg, Fl. Plains N. Amer. 520. 1932. | BASIONYM: Euphorbia commutata Engelmann ex A. Gray 1856. | |
Galarhoeus commutatus var. erectus
| Galarhoeus commutatus (Engelmann ex A. Gray) Small ex Rydberg, var. erectus (Norton) Small, Man. S.E. Fl. 801. 1933. | BASIONYM: Euphorbia commutata Engelmann ex A. Gray, var. erecta Norton 1899. | |
Tithymalus austrinus
| Tithymalus austrinus Small, Fl. S.E. U.S. 720, 1334. 1903. | | TYPE: FLORIDA: Walton Co.: Without locality, 1885, Curtiss s.n. (holotype: NY). |
Tithymalus commutatus
| Tithymalus commutatus (Engelmann ex A. Gray) Klotzsch & Garcke, in Klotzsch, Abh. Königl. Akad. Wiss. Berlin 1859(1): 82. 1860. | BASIONYM: Euphorbia commutata Engelmann ex A. Gray 1856. | |
Tithymalus commutatus var. erectus
| Tithymalus commutatus (Engelmann ex A. Gray) Klotzsch & Garcke, var. erectus (Norton) Small, Fl. S.E. U.S. 720, 1334. 1903. | BASIONYM: Euphorbia commutata Engelmann ex A. Gray, var. erecta Norton 1899. | |