Gary Fewless
Key to the Ferns
| 49. Stipe
jointed above the base with a clear, swollen abscission line. |
Woodsia ilvensis |
| 49. Stipe not jointed above the base, lacking a swollen abscission line. It may be necessary to carefully remove the sporangia to observe the indusium in order to make a distinction between the following two species. | 50 |
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