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The authors report the geographical distribution, habitat and reproductive phenology of the four species of the genus  Kallymenia  from Catalonia, Spain:  K. feldmannii  Codomier,  K. lacerata  J. Feldmann,  K. patens  (J. Agardh) Parkinson and  K. requienii  J. Agardh. The records confirm that these species are quite common in the western Mediterranean Sea, but are very rare in the eastern Mediterranean region, where only  K. lacerata  and  K. requienii  have been found once. In addition, the examination of different herbaria shows that  K. requienii  is present on the Atlantic coast of the north of Spain. The four species are sciophilous and live preferably in the coralligen or in the maerl, usually at depths of more than 30 m in the northernMediterranean Sea or below 40 m in the central and southern Mediterranean Sea. All species are highly proterandrous.  Kallymenia feldmannii  and  K. lacerata  are annual and ensure survival in winter by developing incrusting discs from carpospores and tetraspores.  Kallymenia patens  and  K. requienii  are perennial, and ensure survival by maintaining only the basal part of the blade from one year to the other and developing new blades from it in spring. The perennial species, on aging, accumulate floridean starch in the intermediate cortical layers, which takes the form of whitish spots on the blade surface; the older thalli are totally whitish.

Geographical Distribution, Habitat and Reproductive Phenology of the Genus Kallymenia (Gigartinales, Rhodophyta) from Catalonia, Spain