Dennstaedtia globulifera (Poir.) Hieron.

  • Authority

    Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.

  • Family

    Dennstaedtiaceae

  • Scientific Name

    Dennstaedtia globulifera (Poir.) Hieron.

  • Description

    Species Description - Rhizomes long-creeping, 4–10 mm diam., hairy; fronds 1–3 m long; stipes stramineous, lacking buds at bases; blades deltate, tripinnate to subquadripinnate, 1–1.5 m wide; proximal pinnae stalked, basal pinnae opposite, basal pinnules not especially reduced; axes of penultimate segments winged adaxially; sterile vein tips slender, clavate; laminae pubescent on abaxial surfaces, hairs 1 mm long, clear brown, stiff, spreading; indusia globular, (0.5–)1 mm deep, (0.6–)1–1.3 mm wide; 2n=ca. 94 (Jam, Parag).

  • Discussion

    Polypodium globuliferum Poir. in Lam., Encycl. 5: 554. 1804. Dicksonia globulifera (Poir.) Kuntze, Revis. Gen. Pl. 3: 378. 1898. Type. Plumier, Traite´ Foug. Ame´r., pl. 30, 1705, illustrating a plant from Hispaniola. Dennstaedtia gracilis A. Rojas & Tejero, Revista Biol. Trop. 50(3/4): 1008. 2002 [2003]. Type. Mexico. Hidalgo: Mpio. de Molango, km 118 de la Carretera Federal 105, entre Zacualtipa´n y Molango, Rojas et al. 5376 (MEXU; isotypes CR, F, MO, NY!, UAMIZ, UC, US).

    The large, globular indusia and opposite basal pinnules distinguish this from other species of Dennstaedtia. The small sori of D. gracilis seem to be only a variant of D. globulifera.

  • Distribution

    Wet montane forests; 600–2100 m. Mexico; Guat, Hond, Nic, CR, Pan; Gr Ant; Col, Ven, Trin, Ec, Peru, Braz, Bol, Parag, Arg, Uru.

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