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Thelypteris serrata (Cavanilles) Alston
TOOTHED LATTICEVEIN FERN
Dryopteris serrata; Meniscium serratum

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Thelypteris serrata, entire
© George Yatskievych, 2006-2011 · 1
Thelypteris serrata, entire

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Thelypteris serrata, rhizome
© George Yatskievych, 2006-2011 · 1
Thelypteris serrata, rhizome
Thelypteris serrata, sporangia
© George Yatskievych, 2006-2011 · 1
Thelypteris serrata, sporangia

Thelypteris serrata, sporangia close
© George Yatskievych, 2006-2011 · 1
Thelypteris serrata, sporangia close
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Following modified from Plants Database, United States Department of Agriculture
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Following modified from Flora of North America
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FNA | Family List | FNA Vol. 2 | Thelypteridaceae | Thelypteris

21. Thelypteris serrata (Cavanilles) Alston, Kew Bull. 1932: 309. 1932.

Dentate lattice-vein fern

Meniscium serratum Cavanilles, Descr. Pl., 548. 1802; Dryopteris serrata (Cavanilles) C. Christensen

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 is 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, cross-veins 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 cross-veins, often appearing confluent at maturity; indusia lacking; sporangia glabrous. 2 n = 72.

Cypress sloughs and swamps; 0--50 m; Fla.; s Mexico; West Indies in the Antilles; Central America; South America to n Argentina.

Updated: 2018-01-16 23:51:18 gmt
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