Argyrochosma limitanea subsp. limitanea
Treatment appears in FNA Volume 2.
Leaf-blades broadly deltate-ovate, 4–5-pinnate, with proximal pinnae at least 1/2 as long as blades. n = 2n = 81, apogamous.
Phenology: Sporulating summer–fall.
Habitat: Rocky slopes and cliffs, usually on calcareous or volcanic substrates
Elevation: 800–2300 m
Ariz., Calif., N.Mex., Utah, Mexico in Chihuahua, Sonora
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