FLORA OF ICELAND elements: Polypodium vulgare, Common Polypody, Kòldugrass

Polypodium vulgare; The Common Polypody is not uncommon in the south and west of Iceland, else more rare and missing in the central highlands. It generally grows on cliffs and rock crevices. It is a crawling fern, sending leaves (frond's) from rhizomes. These frond's are 10 to 20 cm long. The first-order leaflets have rather roundish tips and smooth margins. On the bottom-side of the leaves are the sori (spore-forming organs) which are round-shaped and lacking a covering-bract known as an indusium. The leaves stay green in winter.
It is a member of the fern-family: Polypodiaceae (Polypody family). The Icelandic name for this species is Kòldugrass.