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NORTHWARD RANGE EXTENSION IN FLORIDA OF THE INVASIVE FERN LYGODIUM MICROPHYLLUM (LYGODIACEAE)

Robert W. Pemberton
SIDA, Contributions to Botany
Vol. 20, No. 4 (22 December 2003), pp. 1759-1761
Stable URL: http://www.jstor.org/stable/41961051
Page Count: 3
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
NORTHWARD RANGE EXTENSION IN FLORIDA OF THE INVASIVE FERN LYGODIUM MICROPHYLLUM (LYGODIACEAE)
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Abstract

A newly recognized population of the dangerous invasive fern Lygodium microphyllum has been found in Orange County in central Florida. This population of the weed is known to have persisted within a cypress swamp for almost 15 years, during which time the area experienced single or multi-night freezes of -2.5 to -5.5°C This finding indicates that the weed could live in other USDA Cold Hardiness Zone 9 areas such as southern Texas, which the fern may be able to reach via its wind-borne spores. Se encontró en el Condado de Orange, en el centro de la Florida, una población reconocida recientemente del helecho invasivo y peligroso, Lygodium microphyllum. Se sabe que esta población de maleza ha persistido durante 15 años en una ciénaga de ciprés donde fue encontrado, durante tal periodo de tiempo el área experimentó heladas de -2.5 hasta -5.5°C durante una o más noches. Esta observación indica que la maleza podría vivir en otras áreas de la Zona de Resistencia al Frío (USDA) Numero 9, tal como el sur de Tejas, área que el helecho puede alcanzar por las esporas llevadas por el viento.

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