Morphology and distribution of Porphyra hollenbergii (Bangiaceae, Rhodophyta) in the Pacific coast of México

OCCURRENCE AND SEASONALITY OF PORPHYRA HOLLENBERGII (BANGIACEAE, RHODOPHYTA) IS REPORTED FOR THE PACIFIC COAST OF MEXICO, BASED ON SAMPLING CONDUCTED IN 2003 AND THOSE DEPOSITED IN NATIONAL AND FOREIGN HERBARIUM. WE DESCRIBE DETAILS OF MORPHOLOGY AND REPRODUCTIVE CHARACTERS OF THE THALLUS, AS WELL AS ITS HABITAT AND GEOGRAPHIC DISTRIBUTION. WE DETERMINED THAT P. HOLLENBERGII IS A SEASONAL SPECIES IN ITS MACROSCOPIC PHASE FROM FEBRUARY TO MAY (WINTER ” SPRING).