Excerpt - page 74: "... On upper leaflets only. Indusium kidney-shaped, not glandular. Clinton's Fern is considered a true species by some - D. Clin- ..."
Excerpt - page 118: "... DRYOPTERIDACEAE/AsPIDIACEAE One of the commonest of all our native male ferns, alias buckler ferns (on account of the kidney- or buckler-shaped spore protector ( ..."