Michael Grayum 9712 Det. by: R. Moran, 1993 Phenology: 27 February 1990 09:38N 83:55W 2090 m SAN JOSE, DOTA Cordillera de Talamanca. Terrestrial ferns, uncommon on wooded slope along small creek. Rachis dark brown or blackish, only obscurely glossy.
Michael Grayum 8242 Det. by: M. Grayum, IV 1987 Phenology: 3 April 1987 10:06N 84:07W 1960 m HEREDIA, BARVA Cordillera Central. Plants growing terrestrially in disturbed primary forest.
Gerardo Varela 135 Det. by: A. R. Smith, 1994 Phenology: 26 June 1990 10:07N 84:07W 2300 m HEREDIA, BARVA P.N. Braulio Carrillo Cordillera Central. Terrestre. Esporas café.
Gerardo Rivera 157 Det. by: M. Grayum, III 1993 Phenology: 9 November 1989 10:08N 84:06W 2800 m HEREDIA, BARVA P.N. Braulio Carrillo Cordillera Central. Helecho terrestre en bosque primario. Esporas blanquecinas.