Pteris vittata L.

Ladder brake


Species recognized by The Integrated Taxonomic Information System external link, T Orrell (custodian) in 
IUCN Red List Status: NOT EVALUATED external link Showing: scientific names

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Pteris vittata L.

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Pteris vittata L.
Pteris vittata L.

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Classification:

General Description

Comments

Source and Additional Information
Project
Editor
Flora of North America Editorial Committee
Rights
eFloras.org Copyright © Missouri Botanical Garden
Indexed
February 05, 2010
Citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.

Pteris vittata has escaped from cultivation. It is found on almost any calcareous substrate, such as old masonry, sidewalks, building crevices, and nearly every habitat in southern Florida with exposed limestone, notably pinelands. It is scattered throughout Florida and is sporadic, becoming less frequent to rare northward in the coastal plain.

Pteris vittata varies exceedingly in size, density of scales on the rachis, presence or absence of hairs on the abaxial costae, and overall color and aspect of the leaf. As a result, it may occasionally bear a resemblance to forms of P . × delchampsii W. H. Wagner & Nauman, the hybrid between P . bahamensis and P . vittata .

References

Description

Source and Additional Information
Project
Editor
Flora of North America Editorial Committee
Rights
eFloras.org Copyright © Missouri Botanical Garden
Indexed
February 05, 2010
Citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.

Stems stout, short-creeping, densely scaly; scales pale brown. Leaves clustered, 1--10 dm. Petiole green to pale brown, 1--30 cm, densely scaly; scales dense proximally, extending to and along rachis. Blade oblanceolate, 1-pinnate, (15--)25--50(--80) × (6--)13--25 cm; rachis not winged. Pinnae numerous, separated proximally, closely spaced to barely overlapping distally, not remaining green through winter, not decurrent on rachis, not articulate to rachis, linear-lanceolate to linear-attenuate, simple, 2--18 cm × 4--9 mm; base asymmetrically cordate to widened or truncate; margins serrulate, prominently so near apex; apex acuminate, attenuate, or acute; scales of rachis grading into uniseriate hairs on abaxial costae, or hairs absent on abaxial costae; proximal pinnae not divided or lobed. Veins free, forked. Sori narrow, blade tissue exposed abaxially. 2 n = 116.
References
"Pteris vittata L.". Encyclopedia of Life, available from "http://www.eol.org/pages/597257". Accessed 02 Sep 2010.