Non‐monophyly of Bostrychia simpliciuscula (Ceramiales, Rhodophyta): Multiple species with very similar morphologies, a revised taxonomy of cryptic species

SUMMARY The discovery of a plethora of cryptic species in many algal groups has led to speculation as to the causes of this observation and has affected taxonomy, with reluctance to give names to species that look identical. While this is defensible for monophyletic cryptic species complexes, both our understanding of similar morphologies (crypsis) and nomenclature is challenged when we encounter non‐monophyletic ‘cryptic’ species. Bostrychia...