Redescobert Isoetes durieui al sector central de la serralada litoral catalana

Isoetes durieui is a rare Mediterranean fern that grows in temporary pools and streams of NW Catalonia. In 1947 it was discovered for the first time in Barcelona Province near La Roca del Vallès, and
shortly after in the Fuirosos valley. Urbanization, landscape changes, and increasing human access
during the last decades, had caused its disappearance, and it has long been considered extinct in
the province of Barcelona. Four new localities have now confirmed the presence of this species in
the province of Barcelona, all of them located in La Roca del Vallès, just 2 km south of the extinct
locality. Also found accompanying Isoetes were several rare plants, including Sagina subulata,
Ranunculus paludosus, Myosotis discolor, Teesdalia coronopifolia, Trifolium dubium, Juncus capitatus, and Anagallis minima (=Centunculus minimus), which is a novelty for this province.