Gary Fewless
Key to the Ferns
| 62. Blades usually broadest at the base, deltate in shape; mostly in SW Wisconsin. | Cystopteris tennesseensis |
| 62. Blades usually broadest near, but a little
above the base, the shape therefore more ovate or lanceolate; found mostly
in Door County and in the Lake Superior region. |
Cystopteris laurentiana |
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