Vegetation Science Group

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

Vegetation of the Czech Republic

Association XAA01
Polygonetum arenastri Gams 1927 corr. Láníková in Chytrý 2009

Polygonetum arenastri

Photo on botanickafotogalerie.cz

This is a species-poor, low-growing community dominated by the creeping annual Polygonum arenastrum. It occurs on frequently trampled, sunny and dry sites, on various substrata. During dry periods in the summer this vegetation may be formed by monodominant stands of Polygonum arenastrum, but in wetter periods in spring and autumn some other annual species also appear. It is one of the most common vegetation types of trampled habitats occurring from the lowlands to submontane areas throughout the country.

Orig. (Gams 1927): Polygonetum avicularis

Syn.: Polygonetum avicularis Knapp 1945, Plantagini-Polygonetum avicularis Passarge 1964, Matricario discoideae-Polygonetum arenastri Müller in Oberdorfer 1971, Polygonetum calcati Lohmeyer 1975, Polygono arenastri-Lepidietum ruderalis Mucina in Mucina et al. 1993

Diagnostic species: Lolium perenne. Polygonum aviculare agg. (predominantly P. arenastrum)

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

Dominant species: Polygonum aviculare agg. (predominantly P. arenastrum)

Formal definition: Polygonum aviculare agg. cover > 50 % NOT Coronopus squamatus cover > 5 % NOT Eragrostis minor cover > 5 %

Source: Láníková D. (2009): XAA01 Polygonetum arenastri Gams 1927 corr. Láníková in Chytrý 2009. 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. 47-50.