The stipe itself is dark and covered with scales, which are either small, dull and brown or large, dark and glossy. Sori occur near the midvein of fertile pinnules and lack indusia. Fertile pinnules are notably smaller than sterile ones.
The stipe is dark and covered with scales that can be small, dull brown or large, dark glossy. Sori develop near the midvein of fertile pinnules and lack a covering called an indusium.  Fertile pinnules are noticeably smaller than sterile ones.