Monographs Details:
Authority:
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Family:
Aspleniaceae
Aspleniaceae
Description:
Genus Description - Small to medium-sized, terrestrial, epilithic, or epiphytic ferns. Rhizomes creeping to erect, bearing clathrate scales, these often iridescent. Fronds clustered (rarely spaced), not articulate to the rhizome, monomorphic or rarely more or less dimorphic; blades simple, 1- to 4-pinnate, pinnatifid or decompound, anadromous, glabrous or rarely pubescent; pinnae often inequilateral, sometimes auriculate at base on the acroscopic side; veins usually forked, free, rarely a few joined; lower margins of pinnae or pinnules usually decurrent. Sori oval to narrowly linear, borne along the ultimate veins, occasionally doubled; indusium more or less elongate, membranous, laterally attached to vein, opening toward the apex; sporangia with annulus of 20 cells or more; spores more or less ellipsoid to nearly spheroid, monolete.
Genus Description - Small to medium-sized, terrestrial, epilithic, or epiphytic ferns. Rhizomes creeping to erect, bearing clathrate scales, these often iridescent. Fronds clustered (rarely spaced), not articulate to the rhizome, monomorphic or rarely more or less dimorphic; blades simple, 1- to 4-pinnate, pinnatifid or decompound, anadromous, glabrous or rarely pubescent; pinnae often inequilateral, sometimes auriculate at base on the acroscopic side; veins usually forked, free, rarely a few joined; lower margins of pinnae or pinnules usually decurrent. Sori oval to narrowly linear, borne along the ultimate veins, occasionally doubled; indusium more or less elongate, membranous, laterally attached to vein, opening toward the apex; sporangia with annulus of 20 cells or more; spores more or less ellipsoid to nearly spheroid, monolete.
Distribution:
Saint John Virgin Islands of the United States South America|
Saint John Virgin Islands of the United States South America|