Specimens of Amphiroa van-bosseae Lemoine from several localities in t
he Atlantic coast of the Iberian Peninsula were studied. This is the f
irst record of this Pacific species in the European Atlantic. Comparis
ons with the closely related species A. rigida Lamouroux and A. beauvo
isii Lamouroux reveal clear distinctions. This study suggests that mos
t reports of Amphiroa Lamouroux from European Atlantic coasts should b
e referred to A. van-bosseae.