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Isoetes occidentalis Hend.
Family: Isoetaceae [Isoetes echinospora f. flettii (A.A.Eaton) Clute, moreIsoetes echinospora subsp. flettii (A.A.Eaton) Piper & Beattie, Isoetes echinospora var. flettii A. A. Eat., Isoetes flettii (A. A. Eat.) N.E. Pfeiffer, Isoetes howellii f. piperi (Eaton) Clute, Isoetes howellii var. piperi (Eaton) Clute, Isoetes lacustris subsp. paupercula (Engelm.) Feilberg, Isoetes lacustris var. paupercula Engelm., Isoetes macrospora f. paupercula (Engelm.) Clute, Isoetes maritima var. flettii (Eaton) Reed, Isoetes occidentalis subsp. paupercula (Engelm.) Feilberg, Isoetes occidentalis var. piperi (A. A. Eat.) A. Nelson & J.F. Macbr., Isoetes paupercula (Engelm.) A. A. Eat., Isoetes piperi A. A. Eaton]	Resources
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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.