When originally validated in 1861, the generic name was a later illegitimate homonym of: Cyclostigma Hochstetter ex Endlicher, Gen. Suppl. 2: 56. Mar-Jun 1842 (nom. rej.) (Magnoliophyta-Apocynaceae), Cyclostigma Klotzsch in B. C. Seemann, Bot. Voyage Herald 104. Nov 1853 (Magnoliophyta-Euphorbiaceae), Cyclostigma R. A. Philippi, Anales Univ. Chile 36: 197. Sep 1870 (Magnoliophyta-Solanaceae).
Wang, Q. Proposal (1825) to conserve the name Cyclostigma Haught. ex Heer (fossil Lycopsida) against Cyclostigma Hochst. ex Endl. (Apocynaceae). Taxon 57: 657-659. 2008 [http://www.jstor.org/stable/25066048].
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