Parsley Fern

Description

The fronds of C. crispa are 30 centimetres (12 in) long and appear in two distinct forms. Sterile leaves are 2-3-pinnate with the pinnules 5-10 mm (0.2-0.4 in) long by 3-7 mm (0.1-0.3 in) wide, while fertile leaves are 3-4-pinnate, and with narrower pinnules. The fertile leaves have sori scattered along the veins, each with a strongly enrolled false indusium. The sporangia are yellow and mature around midsummer.