De plantis vascularibus praesentim ibericis (IV)

Comments on the chorology of several vascular plants from the Ebro Valley (Huesca, Lerida y Zaragoza) in Spain. Major importance: Achillea filipendulina, Aegilops neglecta, Bidens aurea, B. frondosa, Centaurea depressa.Chamaemelum nobile, Crypsis aculeata, Cyperus michelianus subsp michelianus, C. serotinus, Heteranthera reniformis, Mantisalca duriaei, Pulicaria paludosa. Ranunculus sardous, Reichardia intermedia, Scirpus lacustris subsp. lacustris. S. mucronatus, S. supinus, Senecio lagascanus, Sonchus x novocastellanus and Valerianella eriocarpa.