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The innermost two lower leaflets, right by the stem, on the lowest branch, are shorter than the ones beside them. THIS IS A KEY IDENTIFYING FEATURE TO DIFFERENTIATE Intermediate Wood Fern FROM Spinulose Wood Fern (Dryopteris carthusiana). Other than this characteristic, the two species look virtually identical! |
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A frond. |
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Overall form. Note that on the upper branches of the frond, the lower innermost pinna are NOT shorter than the rest on the branch! |
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Three fronds growing from a single root in the woods. Wood Ferns like the deep woods. |
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Sori on the underside of a frond. |
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Herbarium specimen showing the overall growth form.
(Royal Botanical Gardens Herbarium, Burlington, Ontario) |
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Herbarium specimen.
(Royal Botanical Gardens Herbarium, Burlington, Ontario) |
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Herbarium specimen showing the underside of the leaflets.
(Royal Botanical Gardens Herbarium, Burlington, Ontario) |
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Herbarium specimen showing the root.
(Royal Botanical Gardens Herbarium, Burlington, Ontario) |
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