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Psilotum nudum (L.) P. Beauv.   (redirected from: Psilotum triquetrum Sw.)
Family: Psilotaceae
[Bernhardia antillarum K. Muell., moreBernhardia capensis K. Muell., Bernhardia deppeana K. Muell., Bernhardia dichotoma Willd. ex Bernh., Bernhardia novae-hollandiae Müll. Berol., Bernhardia oahuensis K. Muell., Hoffmannia aphylla Willd., Lycopodium nudum L., Psilotum domingense Gand., Psilotum flabellatum Gand., Psilotum floridanum Michx., Psilotum heterocarpum Col., Psilotum novae-zelandiae Gand., Psilotum nudum var. fallacinum (Domin) Domin, Psilotum nudum var. molesworthii Iranzo, Prada & Salvo, Psilotum triquetrum Sw., Psilotum triquetrum f. insulare Brade, Psilotum triquetrum var. fallacinum Domin, Psilotum triquetrum var. gracile Grev. & Hook.]
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  • FNA
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John W. Thieret in Flora of North America (vol. 2)
Aerial shoots to 50 cm, 4 mm diam. at base. Appendages 0.7--2.5 mm (sterile), 1--1.5 mm (fertile). Synangia yellowish to greenish yellow, 2--3 mm wide. Low to mesic woods, thickets, swamps, hammocks, rocky slopes; 0--50 m (1100 m in Ariz.); Ala., Ariz., Fla., Ga., La., Miss., S.C., Tex.; Mexico; West Indies in the Antilles; Central America; South America; tropical Asia; tropical Africa. Reports of Psilotum nudum in New Mexico and in west Texas remain unverified. A wide range of chromosome numbers on material outside the flora has been reported for this species: n =ca.46--56, 104, 210. Most counts, however, are based on n =52 (reviewed in P.J. Brownsey and J.D. Lovis 1987). No count is available from North American material. Psilotum nudum occurs as a minor weed in greenhouses. Many horticultural forms---including one without appendages and with terminal synangia (A.S. Rouffa 1971)---are grown, especially in Japan.

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The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.