Eriosorus
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Authority
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
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Family
Pteridaceae
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Scientific Name
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Description
Genus Description - Terrestrial; rhizomes short-creeping; rhizome scales tan to black, spreading or appressed, with long, catenate or bristle hairtips; fronds small to large, often scandent or erect, monomorphic, not articulate; stipes mostly brown to atropurpureous, hairy to glandular, rachises sometimes flexuous; blades pinnate-pinnatifid to quadripinnate; pinnae mostly at right angles to rachises, rarely retroflexed, laminae usually hairy or glandular; segments toothed or linear and each with a single vein; veins free; sori along the veins of ultimate segments, without indusia; paraphyses absent; spores tetrahedral-globose, without perispore but generally with an equatorial flange, often with ridges; x=87, prob. from x=29.
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Discussion
Type: Eriosorus scandens Fe´e [= Eriosorus aureonitens (Hook.) Copel.].
Eriosorus is a wholly American genus of 25 species of high elevation cloud forests in forested to open areas. It is close to Jamesonia, and in some areas resembles it and hybridizes with it. There are only two species in Mexico. Eriosorus is distinct in Mexico by its gymnogrammoid sori, 3–4-pinnate blades, and hairy rhizomes.