Difference between revisions of "Pleopeltis astrolepis"
Mexic. Pl. 1: 87. 1872.
Common names: Star-scaled fern
Basionym: Polypodium astrolepis Liebmann
Synonyms: Grammitis elongata Swartz (not Polypodium elongatum Aiton)Grammitis lanceolata SchkuhrGrammitis revoluta Sprengel ex WilldenowPleopeltis revoluta (Sprengel ex Willdenow) A. R. Smith
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>long-creeping, branched, ca. 1 mm diam.; scales round to ovate-lanceolate, centrally clathrate with cell luminae clear, pubescent, hairs reddish brown. <b>Leaves</b> to 20 cm, weakly hygroscopic. <b>Petiole</b> conspicuously flattened, sparsely scaly; scales rarely overlapping, margins fringed. <b>Blade</b> linear-elliptic, simple, to 2 cm wide, margins entire, moderately scaly abaxially, sparsely scaly adaxially; scales bicolored, mostly round, less than 0.5 mm wide, centers brown, clathrate, margins transparent, deeply fringed. <b>Venation</b> complexly anastomosing, fertile areoles with several included veinlets. <b>Sori</b> oval to oblong, discrete or often confluent, surficial to shallowly embossed, soral scales attached to receptacle. <b>Spores</b> shallowly and irregularly papillate to verrucose, ca. 58 µm. <b>2n</b> = 136.</span><!-- |
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|genus=Pleopeltis | |genus=Pleopeltis | ||
|species=Pleopeltis astrolepis | |species=Pleopeltis astrolepis | ||
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Revision as of 13:19, 27 July 2019
Stems long-creeping, branched, ca. 1 mm diam.; scales round to ovate-lanceolate, centrally clathrate with cell luminae clear, pubescent, hairs reddish brown. Leaves to 20 cm, weakly hygroscopic. Petiole conspicuously flattened, sparsely scaly; scales rarely overlapping, margins fringed. Blade linear-elliptic, simple, to 2 cm wide, margins entire, moderately scaly abaxially, sparsely scaly adaxially; scales bicolored, mostly round, less than 0.5 mm wide, centers brown, clathrate, margins transparent, deeply fringed. Venation complexly anastomosing, fertile areoles with several included veinlets. Sori oval to oblong, discrete or often confluent, surficial to shallowly embossed, soral scales attached to receptacle. Spores shallowly and irregularly papillate to verrucose, ca. 58 µm. 2n = 136.
Habitat: Epiphytic in swamps on pond apple (Annona glabra Linnaeus)
Elevation: 0 m
Distribution
Fla., Mexico, West Indies, Central America, South America.
Discussion
Pleopeltis astrolepis is a common species in tropical America, including the West Indies. The only known North American locality, in Broward County, Florida, was discovered in 1977, and (in 1992) the plants are in danger of extirpation from development.
Selected References
None.
Lower Taxa
None.