C.  Epling, ?Supplementary Notes on American Labiatae-IV?, Bulletin of the Torrey Botanical Club, vol. 74, pp. 512?518, 1947.

C.  Epling, ?Supplementary Notes on American Labiatae-III?, Bulletin of the Torrey Botanical Club, vol. 71, pp. 484?497, 1944.

C.  Epling, ?A Synopsis of the Labiatae of the Guianas?, Bulletin of Miscellaneous Information (Royal GardensKew), vol. 1938, pp. 187?196, 1938.

C.  Epling, ?Supplementary Notes on American Labiatae?, Bulletin of the Torrey Botanical Club, vol. 67, pp. 509?534, 1940.

C.  Epling, ?Supplementary Notes on American Labiatae-II?, Bulletin of the Torrey Botanical Club, vol. 68, pp. 552?568, 1941.

C.  Epling, ?Supplementary Notes on American Labiatae-V?, Brittonia, vol. 7, pp. 129?142, 1951.