Acrostichum L.
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Authority
Acevedo-Rodríguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
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Family
Pteridaceae
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Scientific Name
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Description
Genus Description - Large, coarse ferns, chiefly of brackish or saline swamps at sea level, rarely in fresh-water swamps at low to middle elevations. Rhizomes woody, stout, erect or decumbent-ascending, bearing thick, spongy roots and with broad scales at the apex. Fronds clustered, erect, monomorphic or dimorphic; stipe stout; blades 1-pinnate with large simple pinnae, the veins closely reticulate without included free veinlets. Sporangia and paraphyses densely covering lower surface of fertile pinnae; indusium lacking; sporangia with annulus of 20-22 cells; spores tetrahedral-globose, trilete, the surface papillate with numerous minute diffuse rods or strands.
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Distribution
A small pantropical genus of several species.
Saint John Virgin Islands of the United States South America|