Claytosmunda
Genus of ferns / From Wikipedia, the free encyclopedia
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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.
Claytosmunda | |
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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 |
Binomial name | |
Claytosmunda claytoniana (L.) Metzgar & Rouhan | |
Synonyms[2][3] | |
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(species)
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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.