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.
^"NatureServe Explorer 2.0 - Osmunda claytoniana Interrupted Fern". explorer.natureserve.org. Retrieved 9 October 2020.
^Cite error: The named reference PPGI was invoked but never defined (see the help page).
^Cite error: The named reference POWO_77166339-1 was invoked but never defined (see the help page).
^Fernald's "Gray's Manual of Botany" (1950)
^University of Wisconsin-Madison Arboretum, Interrupted fern profile Archived 2013-09-27 at the Wayback Machine
Claytosmunda is a genus of fern. It has only one extant species, Claytosmunda claytoniana (synonym Osmunda claytoniana), the interrupted fern, native...
"flowering ferns" because of the striking aspect of the ripe sporangia in Claytosmunda, Osmunda, Osmundastrum, and Plensium (subtribe Osmundinae). In these...
Paleocene, Osmunda likely derives from fossil species currently assigned to Claytosmunda. There are three to four varieties as traditionally construed: Osmunda...
classification split Osmunda further by elevating its subgenera to genera as Claytosmunda and Plenasium, leaving only the species originally included in subgenus...
tree-fern with Cladophlebis fronds attached is known from this formation. Claytosmunda C. chengii, C. liaoningensis, C. plumites, C. preosmunda, C. sinica,...
burmanica. Claytosmunda zhangii Sp. nov In press Tian, Wang & Jiang Late Jurassic Tiaojishan Formation China A fern, a species of Claytosmunda. Dennstaedtia...
Osmunda pulchella, it was compared with Todea, Leptopteris, Plenasium and Claytosmunda, and found as a bridge in the morphological gap between extant Osmundastrum...
Island) An Osmundaceae fern. Originally placed in Millerocaulis; Moved to Claytosmunda tekelili in (2017). Osmundopsis rafaelii Sp. nov Valid Escapa & Cúneo...
Moscovian) Poland A leptosporangiate fern belonging to the group Filicales. Claytosmunda chengii Nom. nov Valid Bomfleur, Grimm & McLoughlin Middle Jurassic China...
Originally described as a species of Ashicaulis; transferred to the genus Claytosmunda by Bomfleur, Grimm & McLoughlin (2017). Ashicaulis wangii Sp. nov Valid...
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