Cabomba inermis is a controversial fossil species of aquatic plant in the family Cabombaceae. The fossil has also been attributed to several other genera.
Description The leaves are dissected.Newberry, J. S. (1898). The later extinct floras of North America (Vol. 35). US Government Printing Office.Brown, R. W. (1962). Paleocene flora of the Rocky Mountains and great Plains (Vol. 375). p. 68. US Government Printing Office. The fossil may also be interpreted as roots.
Taxonomy It was first published as Psilotum inerme by John Strong Newberry in 1868.Psilotum inerme Newb. (n.d.). The International Fossil Plant Names Index (IFPNI). Retrieved February 19, 2025, from https://ifpni.org/species.htm?id=A1561CB8-86B7-4A85-A6A1-C4F1C41576BF It was moved to the genus Cabomba as Cabomba inermis by Arthur Hollick in 1899.Cabomba inermis (Newb.) Hollick in Newb. (n.d.). The International Fossil Plant Names Index (IFPNI). Retrieved February 18, 2025, from https://ifpni.org/species.htm?id=E756C876-9AA1-44E0-BC16-97E187BFCABA Alternatively, it was placed in the genus Psilotites as Psilotites inermis by Wilhelm Philippe Schimper in 1874.Psilotites inermis (Newb.) Schimp. (n.d.). The International Fossil Plant Names Index (IFPNI). Retrieved February 19, 2025, from https://ifpni.org/species.htm?id=EF177D39-DE73-C862-2F4C-C90A1E4E848A The fossils may also be interpreted as roots of the genus Quereuxia , and may be assigned to the species Quereuxia angulata .MANCHESTER, S. R. (2014). Revisions to Roland Brown's North American Paleocene flora. Acta Musei Nationalis Pragae, Series B-Historia Naturalis, 70. Etymology The specific epithet inermis means unarmed.Government of Singapore. (n.d.-b). Flacourtia inermis Roxb. National Parks Flora Fauna Web. Retrieved February 19, 2025, from https://www.nparks.gov.sg/florafaunaweb/flora/2/9/2920
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