The Identity of Riddell's Seven Validly Published but Over-looked Pteridophytic Binomials

摘要

In 1853 J. R. Riddell validly published seven binomials of pteridophytes for species from Alabama, Louisiana and Texas that were missed by the standard indices. Only one of these names, Lycopodium corallinum, is the first name validly published for a currently recognized species replacing Selaginella riddellii. The six other binomials prove to be later synonyms of species of Adiantum capillus-veneris, Cheilanthes alabamensis, Dryopteris ludoviciana and D. kunthii, Pellaea ovata and Thelypteris hispidula.