The history of Murdannia keisak (Commelinaceae) in the southeastern United States

Murdannia keisak, a constituent of the freshwater wetland flora of the southeastern United States and of eastern Asia, is a weedy species whose range is expanding. Most authorities believe M. keisak to have been introduced into the U.S. from Asia. The first published report of M. keisak in the U.S....

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Bibliographic Details
Published in:Castanea 1990-06, Vol.55 (2), p.122-129
Main Authors: Dunn, C.P. (Ball State University, Muncie, IN), Sharitz, R.R
Format: Article
Language:English
Subjects:
COMMELINACEAE
Crops
ECOLOGIA DE AGUA DULCE
ECOLOGIE D'EAU DOUCE
ESPECE
ESPECIES
ESTADOS DEL SUDESTE (EUA)
ETATS DU SUD EST (EU)
Flora
Fresh water
Freshwater
FRESHWATER ECOLOGY
HISTOIRE
HISTORIA
HISTORY
INTRODUCCION DE PLANTAS
INTRODUCTION DE PLANTES
MALEZAS
Marshes
MAUVAISE HERBE
Murdannia keisak
ORYZA SATIVA
PLANT INTRODUCTION
Plants
Rice
Seeds
SOUTH EASTERN STATES (USA)
SPECIES
SPREAD
TERRE HUMIDE
TIERRAS HUMEDAS
United States history
Vascular plants
WEEDS
WETLANDS
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Summary:Murdannia keisak, a constituent of the freshwater wetland flora of the southeastern United States and of eastern Asia, is a weedy species whose range is expanding. Most authorities believe M. keisak to have been introduced into the U.S. from Asia. The first published report of M. keisak in the U.S. was of a 1935 collection near the site of rice introduction to the Carolinas. It is likely that M. keisak was introduced accidentally with rice cultivation, but was kept from escaping from rice fields by diligent weed control. We discuss the available evidence in an attempt to clarify how and when M. keisak came to the U.S. and what factors may account for its relatively recent spread.
ISSN:0008-7475
1938-4386