Thelypteris grandis var. grandis

A. R. Smith
Treatment appears in FNA Volume 2.
Revision as of 21:24, 5 November 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Stems long-creeping, ca. 1 cm diam. Leaves monomorphic, evergreen, 4–8 cm apart, to ca. 3 m. Petiole straw-colored, to 1.3 m × 0.8–1.2 cm, at base sparsely set with brown, lanceolate, hairy scales. Blade to ca. 1.7 m, broadest at or near base, gradually to somewhat abruptly tapered to pinnatifid apex. Pinnae (15–)20–45 × 2–3.5(–4.8) cm, incised mostly 3/4–9/10 of width; segments oblique, curved, 2–4 basal basiscopic ones (those facing base of petiole) on proximal pinnae greatly reduced or wanting; proximal 1–2(–3) pairs of veins from adjacent segments connivent at sinus. Indument abaxially of hairs 0.1 mm on costae and veins, also of brownish, hairy scales on costae; blade tissue glabrous on both sides. Sori round, medial to supramedial; indusia pinkish to reddish brown, glabrous; sporangia glabrous. 2n = 72.

Habitat: Mixed swamps and old logging roads
Elevation: 0–50 m


V2 635-distribution-map.gif

Fla., West Indies in the Greater Antilles, St. Christopher (St. Kitts).


In the flora Thelypteris grandis var. grandis is known only from one population in Collier County, Florida.

Selected References


Lower Taxa

Alan R. Smith +
A. R. Smith +
Undefined subg. Cyclosorus +
Fla. +, West Indies in the Greater Antilles +  and St. Christopher (St. Kitts). +
0–50 m +
Mixed swamps and old logging roads +
Univ. Calif. Publ. Bot. +
Illustrated +
Nephrodium paucijugum +
Thelypteris grandis var. grandis +
Thelypteris grandis +
variety +