Apuntes sobre la flora gallega, XVII

Resumo

All along the line dealing with knowledge of Galician flora, notices about 11 chorologically interesting taxa are presented: Bidens frondosa L., Crypsis alopecuroides (Piller & Mitterp.) Schrad., Cyperus fuscus L., Cyperus michelianus (L.) Link, Dittrichia graveolens (L.) Desf., Echinochloa crus-galli (L.) P. Beauv. subsp. hispidula (Retz.) Honda, Eragrostis curvula (Schrad.) Nees, Hypericum hirsutum L., Lindernia dubia (L.) Pennell, Polygonum x lenticulare Hy and Xanthium echinatum Murray subsp. italicum (Moretti) O. de Bolòs & J. Vigo. It means 4 first records at regional level and 5 first records at provincial level; as an exceptional case, another taxon is presented as the first regional record in the last half century. At least 8 of them were recorded at riverine habitats included in Bidentetea tripartitae and Isoeto-Nanojuncetea phytosociological classes. It is relevant to underline that near half of species number of this collective are alien plants.