Nephrolepis cordifolia (L.) C.Presl

  • Authority

    Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.

  • Family

    Nephrolepidaceae

  • Scientific Name

    Nephrolepis cordifolia (L.) C.Presl

  • Description

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    Species Description - Rhizome erect, stoloniferous, with tubers; rhizome scales concolorous, linear, orange to tan, 1-3 mm long, margin entire; fronds clumped; stipe 9-18 cm long, ca. 1/6 the frond length, light brown, grooved, often persistently fibrillose-scaly; blade linear-elliptic, 30-60 cm long, 5-7 cm wide, once-pinnate; rachis light brown, fibrillose-scaly, scales bicolorous (pale with dark point of attachment); pinnae narrowly deltate, apex acute, base unequal, lobed with basiscopic lobe, rounded to cordate, not overlapping rachis, acroscopic lobe larger, auriculate, slightly overlapping the rachis, margin crenate; leaf tissue firm, herbaceous; veins indistinct, glabrous; lime-dotted hydathodes on upper surface; sori reniform to lunate, mostly opening toward pinna apex, with shallow sinus; indusia 1-1.3 mm long, margin entire.

  • Discussion

    Polypodium cordifolium Linnaeus, Sp. pl. 2:1089. 1753. Type. Plumier, Traité foug. Amér., t. 71. 1705, illustrating a plant from Hispaniola. See N. pendula, N. exaltata, and key for differences and discussion.

  • Distribution

    Terrestrial; Choapan, Cuicatlán; 750-1500 m. Mexico (Ver, Pue, Oax, Chis); Guat to Pan; US (Fla); WI; Col & Ven to Sur & Braz; Old World tropics.

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