Correspondence 1 indicates that Trifolium gymnocarpon subsp. plummerae was published by John M. Gillett (J.M. Gillett in Authors of Plant Names) in Canadian Journal of Botany 50(10): 1994 (1972), based on Trifolium plummerae S. Watson (Geological Survey of California, Botany 2: 440. 1880). [Therefore, author citation corrected to Trifolium gymnocarpon Nutt. subsp. plummerae (S. Watson) J. M. Gillett, from Trifolium gymnocarpon Nutt. subsp. plummerae (S. Watson) J. Gillett previously in this Index, 21 Mar 2008.]
Correspondence 2 indicates that for The Jepson Manual [Ed. 2] Trifolium gymnocarpon Nutt. var. plummerae (S. Watson) J.S. Martin is to be treated as a synonym of Trifolium gymnocarpon Nutt. subsp. plummerae (S. Watson) J. M. Gillett, with no explanation for the trivial change given.
