Hymenophyllum axillare Sw.

  • Authority

    Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.

  • Family

    Hymenophyllaceae

  • Scientific Name

    Hymenophyllum axillare Sw.

  • Description

    Species Description - Rhizome finely wiry, wide-creeping, dark brown, sparsely clothed with deciduous brown hairs. Fronds erect, distant, up to 17 cm long; stipes chiefly 1.5-5 cm long, deciduously hairy toward base, narrowly winged toward distal end. Blades linear-oblong to ovate or deltate-ovate, 5-12 cm long, 1.5-5 cm broad, acute at apex, 3-pinnatisect; rhachis winged throughout; pinnae spreading, altemate, narrowly deltate-oblong, acuminate; ultimate segments linear, ca. 1 mm broad, the sterile apices rounded or retuse, the leaf tissue firmly membranous and usually somewhat crispate or undulate. Sori broadly ovate to globose-orbicular or subreniform, 1-1.7 mm long, often broader than long, distinctly pedicellate by contraction of the fertile segment; receptacle included.

  • Discussion

    Fig. 24.

    Type. Swartz, from Jamaica without exact locality (isotype B M , photo US).

    Syn. Trichomanes axillare (Swartz) Poiret in Lamarck, Encycl. 8: 76. 1808.

    Sphaerocionium axillare (Swartz) K. Presl, Hymenophyllaceae 35. 1844; Abh. Konigl. Bohm.

    Ges. Wiss. ser. 5, 3: 127. 1845.

    Mecodium axillare {Swartz) Copeland, Philipp. J. Sci. 67: 26. 1938.

  • Distribution

    General Distribution. Greater Antilles.