First evidence for the presence of invasive Solidago altissima ( Asteraceae ) in Europe

• Autores: Filip Verloove, B.J.M. Zonneveld, John C. Semple
• Localización: Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem, ISSN 0511-9618, ISSN-e 1868-6397, Vol. 47, Nº. 1, 2017, págs. 69-75
• Idioma: inglés
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• Resumen

  • The North American invasive species Solidago altissima L. (Asteraceae) is reliably recorded from a single locality in Belgium (Beveren, Waaslandhaven, Verrebroekse Plassen). Nuclear genome size, as measured by flow cytometry, showed this population to be distinct from the closely similar and widespread S. canadensis L. Plants were shown to be hexaploids, with anestimated chromosome number of 2n = 54, while only diploids (2n= 18) of S. ca­nadensis are known from Europe. These findings were further supported by morphological traits. Solidago altissima has repeatedly been claimed from Europe but all these records may be referable to S. canadensis var. canadensis and, more likely, S. canadensis var. hargeri Fernald. To the best of our knowledge, the recently detected population in Belgium represents the first unequivocal record of S. altissima in Europe.