Thelypteris serrata
Kew Bull. 1932: 309. 1932.
Stems short-creeping, 4–10 mm diam. Leaves monomorphic, evergreen, ca. 65–200 cm or more. Petiole tan, (25–) 40–120 cm × 4–10 mm, at base with scales absent or ephemeral. Blade 40–100 cm or more, gradually reduced distally with lanceolate apical pinna that 1/4 to equaling longest lateral pinna; buds sometimes present at base of proximal pinna. Pinnae lanceolate, 15–25 pairs, (10–) 15–25 × (1.5–) 2.5–3.5 (–4.5) cm, rounded to truncate at base, margin hooked-serrate; main lateral-veins of fertile pinnae 3–5 per cm, with rows of 10–18 areoles between costa and margin, crossveins somewhat curved. Indument abaxially of spreading, irregularly crimped hairs ca. 0.2–0.3 mm on costae and sometimes veins adaxially; blades glabrous adaxially. Sori oblong-arcuate, uniseriate between main lateral-veins on crossveins, often appearing confluent at maturity; indusia lacking; sporangia glabrous. 2n = 72.
Habitat: Cypress sloughs and swamps
Elevation: 0–50 m
Distribution
Fla., s Mexico, West Indies in the Antilles, Central America, South America to n Argentina
Discussion
Selected References
None.