Links to genera Ferns and Horsetails (Monilophytes) Clubmosses and Quillworts (Lycophytes)
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| Isoetes echinospora • Spring Quillwort
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| Isoetes echinospora Durieu; I.setacea auct.non Lam.; Spring Quillwort
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| Plant washed up on lakeshore, North Wales, May |
 | Plant washed up on lakeshore, North Wales, May |
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| Plant washed up on lakeshore, North Wales, May |
 | Close-up. The cross-walls in the leaves are visible as lighter bands. |
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| Selection of quills washed up on lakeshore, North Wales, May |
 | Base of quills |
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