Polystichum Polystichum, (Forskal) Woynar (Forskal) Woynar

3. P. setiferum (Forskâl) Woynar , Mitt. Naturw. Ver. Steierm. 49: 181 (1913)

( P. aculeatum auct. non (L.) Roth, P. angulare (Kit. ex Willd.) C. Presi , Aspidium aculeatum Swartz pro parte).

Rhizome thick, woody. Leaves, 30-120 cm, soft, usually not persistent; lamina 10-25 cm wide, lanceolate, 2-pinnate; pinnae up to 40 on each side; pinnules serrate, distinctly stalked, not decurrent; proximal acroscopic pinnule scarcely longer than the rest, its proximal side rounded below, its distal obtusely auricled, the two sides forming an obtuse angle at the base. Indusium thin, caducous. In — 82. S., W. & C. Europe. Al Au Az Be BI Br Bu Co Ga Ge Gr Hb He Ho Hs Hu It Ju Lu?Po Rm Rs (K) Sa SiTu.

P. x bicknellii (Christ) Hahne (2 x 3) is found with the parents in many places in W. & C. Europe; the plants are often infertile and vigorous, most of them presumably being triploid, but it is often difficult to name individual plants from hybrid complexes.