Hemionitis rufa (L.) Sw.

  • Authority

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

  • Family

    Pteridaceae

  • Scientific Name

    Hemionitis rufa (L.) Sw.

  • Description

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    Species Description - Rhizomes suberect; rhizome scales bicolorous; fronds ca. 20-60 cm long, with stipes (1/3-) 1/2-2/3 the blade length; stipes and rachises dark reddish brown to atropurpurpeous, pubescent with short, acicular trichomes and fewer, longer, multicellular ones; blades 1-pinnate, each with a conform terminal pinna; pinnae oblong, mostly 7-12 lateral pairs, 5-8 cm long, broadly cuneate to subcordate at bases, short-stalked to 5 mm, apices acute, margins entire; veins free; laminar tissue on both sides more or less pubescent with acicular, multicellular, ± appressed trichomes; 2n=60 (Jam).

  • Discussion

    Acrostichum rufum L., Syst. Nat., ed. 10, 2: 320. 1759. Gymnopteris rufa (L.) Bernh. ex Underw., Bull. Torrey Bot. Club 29: 627. 1902. Type (according to R. Tryon, Contr. Gray Herb. 194: 82. 1964). Sloane, Nat. Hist. Jam. 1: pl. 45, f. 1, 1707, illustrating a plant from Jamaica; LINN 1245.6 is also this species.

    Hemionitis rufa hybridizes with H. palmata in Jamaica (H. xsmithii (Trevis.) C. Chr.), but this hybrid has not been found in Mexico.

  • Distribution

    Rain forests; 300–1000 m. Mexico; Guat, Hond, Nic, CR, Pan; Jam; Col, Ven, Sur, Ec, Peru, Braz, Bol.

    Bolivia South America| Brazil South America| Peru South America| Ecuador South America| Suriname South America| Venezuela South America| Jamaica South America| Panama Central America| Costa Rica South America| Nicaragua Central America| Honduras Central America| Guatemala Central America| México Mexico North America|