Lindsaea
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Authority
Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
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Family
Lindsaeaceae
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Scientific Name
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Description
Species Description - Small tenestrial fems. Rhizome short- or long-creeping, clothed with scales both broad and very nanow or hairlike, the two types intermingled. Fronds monomorphic (rarely dimorphic), closely attached or remote, short- to long-stipitate; blades simple or variously subdivided; ultimate divisions usually dimidiate, having their chief vein located along the basiscopic margin. Sori marginal, usually on a vascular commissure connecting the ends of two or more veins; indusium semiovate to linear, attached at the base or (when elongate) also along part of the sides, opening toward the margin. Sporangia with annulus of 7-15 cells; spores usually spheroidal or 3-lobed, trilete, or sometimes ellipsoidal and monolete, the surface smooth, slightly granular, or marked with curled strands.
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Discussion
Type Species. Lindsaea trapeziformis Dryander, n o w conectly known as L. lancea (Linnaeus) Beddome, of the neotropics.
A pantropical genus of more than 150 species, four of these occurring in Puerto Rico. The generic name commemorates John Lindsay, a surgeon in Jamaica (d. 1803), w h o studied the germination of fem spores. Special Literature. Kramer, K. U. 1957. A revision ofthe genus Lindsaea in the New World with notes on allied genera. Acta Bot. Neerl. 6: 97-280, figs. 1-92; Tryon, R. M . & A. F. Tryon. 1982. Fems and allied plants, pp. 421-429, 24 figs.