Thelypteris cheilanthoides (Kunze) Proctor
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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
Thelypteridaceae
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Scientific Name
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Description
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Species Description - Rhizomes erect, caudices (1–)2–4(–5) cm diam.; fronds mostly 60–150(–200) cm long, usually mucilaginous when coiled; stipes stramineous to tan, to 25 x 0.4–1 cm; blades subsucculent when living, chartaceous to subcoriaceous when dried, mostly 75–175 x 6–50 cm, with 2–5 pairs of abruptly reduced proximal pinnae, the lowermost glanduliform; pinnae (3–)10–25(–30) x (1–)1.5– 3(–4) cm, incised to within 1(–3) mm of costae; aerophores prominent, tuberculiform or peg-like at pinna bases; segments with revolute margins, ca. 3–5 mm wide, proximal segments often elongate, the basiscopic one the longest and often dentate; veins (7–)10–18(–23) pairs per segment, usually immersed and darkened abaxially; indument abaxially usually of a few stiff septate hairs to 2(–2.5) mm long on rachises and costae, or sometimes glabrous or glabrescent, tissue between veins glabrous on both sides, or with sessile yellowish to orange glands; sori submarginal, often partially hidden by revolute margins, with indusia relatively large, persistent, often glandular on the margins; sporangia glabrous; 2n=58, 116 (Oax).
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Discussion
Aspidium cheilanthoides Kunze, Linnaea 22: 578. 1849. Dryopteris cheilanthoides (Kunze) C. Chr., Index Filic. 257. 1905. Amauropelta cheilanthoides (Kunze) A° . Lo¨ve & D. Lo¨ve, Taxon 26: 325. 1977. Type. Brazil. Regnell II 326 (LZ destroyed; isotype S).