Abstract

SCARAMUZZINO, Rosa L.; GOYENETCHE, Juan M.  and  VERCELLI, Natalia. Novelties on the geographic distribution, habitats and invasion status of Parietaria judaica and notes on Soleirolia soleirolii (Urticaceae, Parietariae) in Argentina. Lilloa [online]. 2023, vol.60, n.2, pp.125-147. ISSN 0075-9481.  http://dx.doi.org/doi.org/10.30550/j.lil/1737.

Parietaria judaica and Soleirolia soleirolii (Parietariae, Urticaceae) are perennial herbs native to the Northern Hemisphere, inhabiting urban and peri-urban environments in various countries. In this work, the record for P. judaica is updated with the inclu- sion new localities and habitats in the province of Buenos Aires, naturalization areas of S. soleirolii in Argentina are also mentioned, as well as the invasion status for each species is established. Herbarium specimens of both species collected between 1989 and 2022 in different cities of Buenos Aires were studied. The habitats were docu- mented through observations in naturalized populations. S. soleirolii was found only in urban environments, whereas the distribution area of P. judaica expanded to new habitats in both urban and peri-urban sectors of Buenos Aires. The latter species has a long period of flowering and fruiting. This work also mentions its probable agents and pathways of dispersal. Illustrative images of the species and their habitats are provided, together with maps showing the geographic position of the populations, and a key feature is introduced, allowing to differentiate the genera of the Parietarie- ae tribe in Argentina. The invasion status of these species in Argentina is different.S. soleirolii is not currently a species with high invasive potential; on the contrary,P. judaica has a high propagule pressure, and probably advances along the railroad tracks; therefore its invasive potential is high. In addition, its pollen is allergenic.

Keywords : Alien species; allergenic species; Argentinean Flora; Buenos Aires; urban flora; Urticaceae.

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