Stigmatopteris sordida (Maxon) C.Chr.
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Authority
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
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Family
Dryopteridaceae
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Scientific Name
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Description
Species Description - Rhizome scales brown, lanceolate, 5-7 mm long, 1.5-3 mm wide, margin entire to denticulate; fronds 1 m or more long; stipe castaneous, scaly at base; blade pinnate-pinnatifid; pinnae 15-20 pairs, 17-23 cm long, 3.5-4.0 cm wide, lobed 2/3-3/4 their width, pinnules serrate in distal 1/3, lowermost pinnae short-stalked, middle ones sessile to subadnate, distal ones fully adnate and short-decurrent, only the uppermost few joined by a wing; rachis and costae below with numerous ovate-lanceolate, tan, fibrillose scales, 1-2 mm long, 0.3-0.5 mm wide, tips clavate; adaxial costal groove with minute puberulence, especially dense near base of pinnae; veins 6-11 pairs per segment, not united; sori 5-10 pairs per segment.
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Discussion
Dryopteris sordida Maxon, Contr. U.S. Natl. Herb. 24: 60. 1922. Type. Guatemala. Alta Verapaz: Cubilquitz, Türckheim II. 1432 (US!; isotype US!). Stigmatopteris sordida is distinct from S. chimalapensis in its larger frond, more deeply cut pinnae and more veins per lobe.
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Distribution
Terrestrial in wet forests; Ixtlán; 450-600 m. Mexico (Oax, Chis); Guat, CR.
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