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FNA | Family List | FNA Vol. 2 | Polypodiaceae | Campyloneurum

2. Campyloneurum angustifolium (Swartz) Fée, 5: 257. 1852.

Narrow strap fern

Polypodium angustifolium Swartz, Prodr., 130. 1788

Stems short-creeping, 3--7 mm diam. Leaves usually many, arching to pendent. Petiole essentially absent to ca. 3--5(--8) cm. Blade yellowish to dark green, elongate-linear, ± falcate, 30--60 × 0.5--1.5 cm, papery; base and apex long-attenuate; margins often slightly revolute. Veins obscure, primary veins inconspicuous, slightly to strongly curved, areoles in 1--4 series between costa and margin, with free included veinlets. Sori in 1--2 rows on each side of costa.

Epiphytic on oaks, pond apples, magnolias, and other rough-barked trees in hammocks and swamps in the everglade keys; substrate subacid; 0 m; Fla.; Mexico; West Indies; Central America; South America.

In the flora Campyloneurum angustifolium occurs only in Collier County, Florida. It was reported earlier from Dade and Seminole counties.


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