Hymenophyllum elegans Spreng.

Matos, Fernando B., Bohn, Amabily & Labiak, Paulo H., 2020, The ferns and lycophytes of Reserva Natural Guaricica, Antonina, Paraná, Brazil, Check List 16 (1), pp. 183-206: 193

publication ID

http://doi.org/ 10.15560/16.1.183

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scientific name

Hymenophyllum elegans Spreng.


Hymenophyllum elegans Spreng.  

Figure 4E

Examined material. BRAZIL • 1 specimen; Trilha do Gervásio ; 25°14′39″S, 048°39′59″W; alt. 300 m; 25 Mar. 2006; F.B. Matos et al. 1117 leg.; UPCB5356 GoogleMaps   2 spec- imens; Trilha do Mirante ; 25°14′25″S, 048°39′55″W; alt. 250 m; 25 Mar. 2006; F.B. Matos et al. 1121 leg.; CEPEC118539, RB648457 View Materials GoogleMaps   1 specimen; Morro do Quei- mado; 25°23′10″S, 048°42′19″W; alt. 300 m; 12 Jun. 2019; F.B. Matos et al. 2637 leg.; UPCB43865 GoogleMaps   .

Identification. Characterized by filiform stems ca 0.2 mm in diameter, pendent leaves up to 8 cm long, nonalate petioles, and linear to lanceolate blades that are 1-pinnate-pinnatifid at base, pinnae mostly adnate, and rachis not alate at base. Also characteristic is the presence of simple, forked or stellate hairs on the leaf. Sori marginal, round, indusia consisting of two lobes. Other hairy species of Hymenophyllum   , such as H. fragile   , H. hirsutum   and H. pulchellum   , differ by petiolulate pinnae (at least the lower pairs) or rachises alate to base.

Distribution and habitat. Neotropical. Epiphytic or epipetric in forests.