Microgramma heterophylla
Amer. Fern J. 54: 145. 1964.
Common names: Climbing vine fern
Illustrated
Basionym: Polypodium heterophyllum Linnaeus Sp. Pl. 2: 1083. 1753
Treatment appears in FNA Volume 2.
Revision as of 21:13, 27 May 2020 by imported>Volume Importer
Stems appressed to substrate, 0.5–1.2 mm diam.; scales reddish to dark brown, linear-triangular. Leaves irregularly spaced. Petiole to ca. 2 cm. Blade 4–15 × ca. 1 cm, margins entire to undulate and ± shallowly crenulate, glabrous. Veins forming 1 series of linear polygonal costal areoles without free included veinlets, medial row of larger rectangular to polygonal areoles (usually with 1–2, simple or forked, free included veinlets), and a series of short, casually anastomosing marginal veinlets. Sori terminal on included veinlets; indument of few paraphyses longer than sporangia.
Habitat: Epiphytic on relatively smooth-barked trees, or growing on logs and rock, in tropical hammocks, substrate circumneutral to acidic
Elevation: 0 m
Distribution
Fla., West Indies.
Discussion
Selected References
None.
Lower Taxa
None.