Abstract
Grateloupia lanceola was originally described from the southern Iberian Peninsula and northwestern Africa coasts. Its current Iberian distribution only includes some localities in NW (La Coruna) and SE (Malaga) Spain. The closely related invasive species Grateloupia turuturu is present in Galicia (NW Spain) since 1991 and in northern Portugal since 1997. Galicia is the only area in Europe where both especies are sympatric. This paper presents a comparative study of G. lanceola and G. turuturu along the Iberian Peninsula coast. The blade of G. lanceola is purplish red with a characteristic emerald green colour to the base, and usually has scattered paler spots. Moreover, it is 200-450 µm thick, has a sort stipe, and marginal proliferations developed usually only in eroded areas. The lamina of G. turuturu is red or pink through, without paler spots or green areas. It is thinner (130-250 µm), has a long stipe, and frequent congenital marginal proliferations.
Highlights
Grateloupia lanceola was originally described from the southern Iberian Peninsula and northwestern Africa coasts
Los mismos autores cuestionan por ello este criterio taxonómico reduccionista, tendente a reagrupar por su variabilidad morfológica y falta de caracteres diagnósticos definidos muchas de las especies foliosas descritas en el género Grateloupia, entre ellas G. lanceola
The appearance of Grateloupia doryphora (Halymeniaceae, Rhodophyta) on the northeast coast of Nort America
Summary
El material fue recolectado en la costa de Galicia, Málaga y Portugal y conservado en agua de mar formolada al 4% y en seco, depositando los ejemplares en el herbario SANT-Algae de la Universidad de Santiago de Compostela. El estudio anatómico se efectuó mediante secciones manuales a partir de material seco, así como en fresco mediante inclusiones en gelatina, tal como se describe en Pérez-Cirera & al. Igualmente, se ha revisado material de herbario de la Península Ibérica depositado en los herbarios BCF, MGC, VAL, BIO, PO y del Departamento de Botánica de la Universidad de Coimbra
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