Doryopteris concolor (Langsd. & Fisch.) Kuhn
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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
Species Description - Rhizomes short, compact; rhizome scales 3–4 x 0.3 mm; fronds clumped, to 34 cm tall; stipes castaneous, flattened to grooved adaxially, glabrous, lustrous, with scattered scales at bases; blades pedate, bipinnatifid to quadripinnatifid at bases, lacking proliferous buds, texture thin to firm; veins free, visible with transmitted light; sterile margins entire to irregularly crenulate; fertile margins extending 0.1 mm beyond bases of indusia; sori marginal, continuous (breaking at sinuses and near tips of segments); indusia entire, 0.3 mm wide; spores tan; 2n=60 (Parag), 2n=120 (Taiwan).
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Discussion
Pteris concolor Langsd. & Fisch., Pl. Voy. Russes Monde 1: 19, t. 21. 1810. Cheilanthes concolor (Langsd. & Fisch.) R. M. Tryon & A. F. Tryon, Rhodora 83: 133. 1981. Type. South Pacific. “Archipelagi Marquesas dicti insula Nucahiva,” Langsdorff s.n. (LE?; isotypes BM!, B-Willd. 19961!).
Mexican material belongs to var. concolor. Tryon (1942) was uncertain of the relationships of this species because of its free venation. Tryon and Tryon (1982) transferred this species to Cheilanthes, but molecular data (Gastony & Rollo, 1995) have shown its proper place is in Doryopteris. Doryopteris concolor differs from D. palmata by its free veins and glabrous stipes.