The Phyllitis scolopendrium live in Europe, the Mediterranean, the Azores and Madeira. The farther south than its presence is rare. Their preferred habitat is forests, caverns, caves, ravines, gullies and shady and cool walls with constant humidity throughout the year.
One of the characteristics of the Phyllitis scolopendrium the base cordate with rounded divaricated auricula and petiole no shorter than the lamina, which is lanceolate in adult and oblong-lanceolate in young copies and can reach up to 60 cms. The base with rounded and not divaricated auricula distinguish it from the Phyllitis sagittata, which in the adult specimens usually have acute and divaricated. .
Detail of linear, parallel to each other and unequal sori that can reach up to 3 cm. Indusium entire margin in the photo is not because it has been opened and the sporangia are deployed, towering above the indusium.
Sporangium of Phyllitis scolopendrium already deployed with the empty bag after the dispersal of spores.
Small spores deer tongue. Its size is generally not exceed 33 microns, which indicates a diploid ferns.
Tiny sporophytes of Phyllitis scolopendrium with his first frond, which has sprung from a fertilized oosphere of a gametophyte.
Luxuriant population of Phyllitis scolopendrium gametophytes after mass germination of spores dispersed sporangia of an old copy which is a few meters above. Picture taken at Caldeira do Faial in the Azores. They are some sporophytes with fronds at different stages of growth.