Re: Phytolacca sp. yup, pokeweed. cut the stems with the berries off as soon as you can, or, you'll have a ton of seedlings!
Re: Phytolacca sp. (Yup, it's a P. americana, a nasty invasive weed in Europa, just like P. esculenta...)
In Portugal, Phytolacca americana is not on the formal list of invasive plants, but is in the list "Outras espécies a ter em atenção" (Other species with invasive potential ) at the Portuguese invasive plant website: http://www1.ci.uc.pt/invasoras/index.php?menu=1&tabela=home&language=pt http://www1.ci.uc.pt/invasoras/index.php?language=eng (bilingual portuguese and english versions) Boa Sorte Brian