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BOTANICAL NOTE
The ephemeral appearance of Ambrosia artemisiifolia (Asteraceae) in Warsaw
 
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Zakład Botaniki Konserwatorskiej, Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej w Powsinie, ul. Prawdziwka 2, 02-973 Warszawa, Polska
Online publication date: 2020-12-30
Publication date: 2020-12-30
 
Fragm. Flor. et Geobot. Pol. 2020; XXVII(2): 714–717
 
ABSTRACT
Only one specimen of Ambrosia artemisiifolia was discovered growing among ornamental shrubs on a city lawn in the Wola district (western part of Warsaw). This is the third locality of it found in Warsaw. Ambrosia artemisiifolia is a widespread invasive species native to the eastern prairies of North America. It is a noxious weed, naturalized in boreal, temperate and tropical Eurasia, Africa, Macaronesia, Australia, New Zealand, Oceania and Hawaii, as well as Alaska, Canada and the southwestern United States.
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