Claytosmunda Temporal range:
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | Polypodiophyta |
Class: | Polypodiopsida |
Order: | Osmundales |
Family: | Osmundaceae |
Section: | Claytosmunda (Y.Yatabe, N.Murak. & K.Iwats.) Metzgar & Rouhan |
Species: | C. claytoniana
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Binomial name | |
Claytosmunda claytoniana (L.) Metzgar & Rouhan
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Synonyms[2][3] | |
(genus)
(species)
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Claytosmunda is a genus of fern. It has only one extant species, Claytosmunda claytoniana (synonym Osmunda claytoniana), the interrupted fern, native to Eastern Asia, Eastern United States, and Eastern Canada.
The specific epithet is named after the English-born Virginian botanist John Clayton.[4] "Interrupted" describes the gap in middle of the blade left by the fertile portions after they wither and eventually fall off.[5]
The plant is known from fossils to have grown in Europe, showing a previous circumboreal distribution. Fragmentary foliage resembling Claytosmunda has been found in the fossil record as far back as the Triassic.
PPGI
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