Concerning the names Scagelia corallina and Heterosiphonia wurdemannii (Ceramiales, Rhodophyta)

Abstract

The names of two species of marine red algae of the order Ceramiales are treated. Scagelia pylaisaei (Montagne) comb. nov. is proposed as the taxonomically and nomenclaturally correct name for the species that has recently been called Scagelia corallina . Callithamnion crispellum C. Agardh is shown to be an older name available for Heterosiphonia wurdemannii (Bail. ex Harv.) Falkenb., and H. crispella (C. Ag.) comb. nov. is proposed. Heterosiphonia crispella var. laxa (Borges.) comb. nov. is also recognized.