Gary Fewless
Key to the Ferns
| 44. Indusium cup-shaped
(each "cup" is a combination of a true indusium and the inrolled
leaf margin) and located at the margin of the blade segments; blade conspicuously
hairy on both surfaces. |
Dennstaedtia punctilobila |
| 44. Indusium round
or kidney shaped, (or cup-shaped of strap-like or hair-like segments
in Woodsia) and not marginal except in Dryopteris marginalis, the
blades of which are glabrous; blades of other species glabrous or hairy. |
45 |
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