Monographs Details: Isoetes montezumae A.A.Eaton
Authority: Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Discussion:Type. Mexico. México: Nr. Flor de María, Pringle 3459 (YU; isotypes MO, NY!—4 sheets).
The Isoetes mexicana complex is a difficult group distinguished by the smooth to inconspicuously pustulate megaspores (350-660 µm diam.) with smaller, more crowded pustules near equatorial ridge, 2-lobed corms, and unspotted to lightly spotted megasporangia. Hickey (specimens at NY) recognizes both species; a Chiapas specimen, Breedlove 15070 (=I. pringlei in A. R. Smith, 1981) is annotated as 7. montezumae.
Distribution:Mexico North America