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An entire Cut-leaved Grape Fern plant.
This is a tough fern to ID properly. It closely resembles the other Grape Ferns. The two main differentiators of this species is that the leaf edghes are toothed or dissected, and that new growth appears very late in the season (August or September). |
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This species comes in two primary forms.
This is f. dissectum, also known as Cut Leaved Grape Fern, in which the leaves have edges that are very toothed. |
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And this is f. obliquum, also known as Ternate Grape Fern, in which the leaves have somewhat less toothed edges, although they are still toothed. |
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A pair of Cut-leaved Grape Ferns, one very much smaller than the other. |
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Leaves.
One way to confirm the ID of this difficult-to-ID fern, is that the new growth appears in late August or September! So it is still fresh looking in late September.
This photo was taken on Oct 5! |
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The fertile frond of Cut-leaved Grape Fern. |
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Cut-leaved Grape Fern - Sceptridium dissectum f. obliquum
(Royal Botanical Gardens Herbarium,Burlington,Ontario). |
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Cut-leaved Grape Fern - Sceptridium dissectum f. dissectum
(Royal Botanical Gardens Herbarium,Burlington,Ontario). |
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Range map for Cut-leaved Grape Fern (Sceptridium dissectum)
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)
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