Authors: L.  

Botanical Description

vulgare var. virginianum). Rhizomes slender, far creeping, to 3mm thick, brown-scaly. Leaves 12-30cm long, the linear to oblong-lanceolate blades more than half this, composed of twenty-five to fifty-one oblong-lanceolate pinnae bearing orbicular sori. Eastern Asia (including Japan) and eastern North America, on rocks and tree trunks. Essentially the North American version of P.

vulgare.