Vegetation Science Group

Department of Botany and Zoology | Faculty of Science | Masaryk University

Vegetation of the Czech Republic

Class XA
Polygono arenastri-Poëtea annuae Rivas-Martínez 1975 corr. Rivas-Martínez et al. 1991
Vegetation of trampled habitats

XAA Coronopodo-Polygonion arenastri

XAB Saginion procumbentis

The class Polygono arenastri-Poëtea annuae includes disturbed vegetation of trampled habitats, formed mostly by annual plants with a ruderal or stress-tolerant life strategy. Most species are short, with prostrate growth, tough stems, creeping stolons, or leaf rosettes. Most of them produce many seeds, which are dispersed on human or animal feet or on vehicle wheels. Trampling leads to soil compaction, especially on loamy substrata, where long periods of desiccation can alternate with short-term surface waterlogging. The present syntaxonomical concept includes the vegetation of trampled habitats on mesic soils with predominance of perennial species, as well as meadow plant communities into the class Molinio-Arrhenatheretea, while the vegetation on drier or more frequently trampled soils dominated by annual species is assigned in the class Polygono-Poëtea.

Orig. (Rivas-Martínez 1975): Polygono-Poetea annuae Rivas-Martínez clasis nova (Polygonum aviculare)

Syn.: Plantaginetea majoris sensu auct. non Tüxen et Preising ex von Rochow 1951 (pseudonym)

Diagnostic species: Herniaria glabra. Lepidium ruderale. Lolium perenne. Matricaria discoidea. Plantago major, Poa annua, Polygonum aviculare agg. (predominantly P. arenastrum), Sclerochloa dura. Bryum argenteum

Constant species: Lolium perenne. Matricaria discoidea. Plantago major. Poa annua. Polygonum aviculare agg. (predominantly P. arenastrum), Taraxacum sect. Ruderalia

Source: Láníková D. (2009): XA Polygono arenastri-Poëtea annuae Rivas-Martínez 1975 corr. Rivas-Martínez et al. 1991. In: Chytrý M. (ed.), Vegetace České republiky. 2. Ruderální, plevelová, skalní a su»ová vegetace [Vegetation of the Czech Republic 2. Ruderal, weed, rock and scree vegetation]. Academia, Praha, pp. 43-46.