Dryopteris aemula, (Aiton) O. Kuntze

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 22

9. D. aemula (Aiton) O. Kuntze , Revis. Gen. Pl. 2 ’. 812 (1891).

Rhizome erect or ascending. Leaves 15-60cm, tufted; petiole about as long as lamina; scales narrowly lanceolate, concolorous, reddish-brown; lamina triangular-ovate to -lanceolate, bright green, with minute sessile glands on both surfaces, fragrant, 3- to 4-pinnate; pinnae 15-20 on each side, stalked, triangular-ovate to -lanceolate, pinnate; pinnules triangular-ovate to lanceolate or oblong, the basal very shortly stalked, the others sessile, pinnate; pinnules of the third or fourth order with upturned margins, pinnately toothed. Sori 0-5-1 mm in diameter; indusium with sessile glands. 2/7 = 82. W. Europe, from Açores and N.W. Spain to N. W. Scotland. Az Br G a Hb Hs.