Lindsaea quadrangularis subsp. antillensis K.U.Kramer
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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 - Rhizome short-creeping, 2-3 mm in diam., clothed with lanceolate scales 1.5-2 mm long and 0.3-0.4 mm wide above base. Fronds arching, mostly 40-75 cm long; stipes 15-40 cm long, brown at base, greenish-yellow distally, deeply grooved on adaxial side. Blades broadly oval in outline, 15-35 cm long and broad, 2-pinnate, with 1-3(-4) pairs of distant, oblique or ascending lateral pinnae and a similar terminal one; rhachis quadrangular, grooved on adaxial side; costae grooved on both sides; pinnae linear-attenuate, subequal, short-stalked, 9-25 cm long; pinnules 15-40 pairs, obliquely ascending, dimidiate- oblong, tongue-shaped, or rounded subrhomboid from a cuneate base, 12-20 mm long, 5-10 mm broad, the margins crenate when stersterile, entire when fertile; veins forked once or twice; tissue thin-herbaceous, pellucid. Sori submarginal, continuous; indusium membranous, very nanow, not equalling width of opposed margin.
Distribution and Ecology - General Distribution. Puerto Rico, Lesser Antilles, and Venezuela; other subspecies of L. quadrangularis occur in Central and South America. Distribution in Puerto Rico. Known only from a few collections gathered in the Siena de Luquillo; recorded from Naguabo and Rio Grande. Habitat. Tenestrial in wet forest at middle to rather high elevations (300-950 m), rare.
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Discussion
Type. Eggers 647, from "Roseau-lagoon," Dominica (B).
Syn. Lindsaea montana Fee, Mem. foug. 11: 17. 1866, in part. (Type. LHerminier "1862 et 1864," from Guadeloupe, RB.)
Lindsaea lancea f. montana (Fee) Lindman, Ark Bot. 1: 198. 1903, with regard to type only, Lindsaea lancea var. montana (Fee) Bonaparte, Notes Pter. 7: 343. 1918