Vegetation Science Group

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

Vegetation of the Czech Republic

Association XDE10
Reynoutrietum japonicae Görs et Müller in Görs 1975

Reynoutrietum japonicae

Photo on botanickafotogalerie.cz

This association includes species-poor stands dominated by Reynoutria japonica and R. sachalinensis, tall broad-leaved herbs of eastern Asian origin, and their hybrid R. .bohemica. It occurs mainly on river banks, but it is also common on roadsides, along railways, in waste places and abandoned meadows. Reynoutria species intensively spread to new sites via vegetative propagules and once established, they move to dominate the sites through intensive clonal growth. Invasion of Reynoutria species in the Czech Republic started in the middle of 20th century. Their monodominant stands are scattered to common from lowlands to submontane areas across the country. The hybrid tends to be more invasive than its parent species.

Nomen mutatum propositum

Orig. (Görs 1975): Polygonetum cuspidati (Moor 1958) Görs et Müll 1969 (Polygonum cuspidatum = Reynoutria japonica)

Syn.: Impatienti-Solidaginetum Moor 1958 p. min. p. (§ 36, nomen ambiguum), Polygonum cuspidatum-Convolvulion-Gesellschaft Görs et Müller 1969 (§ 3c), Aegopodio-Reynoutrietum sachalinensis Brzeg in Brzeg et Wojterska 2001

Diagnostic species: Calystegia sepium, Reynoutria japonica, R. sachalinensis

Constant species: Aegopodium podagraria, Reynoutria japonica, Urtica dioica; Brachythecium rivulare

Dominant species: Reynoutria japonica, R. sachalinensis, R. ×bohemica. Urtica dioica

Formal definition: Reynoutria ×bohemica cover > 25 % OR Reynoutria japonica cover > 25 % OR Reynoutria sachalinensis cover > 25 %

Source: Láníková D. (2009): XDE10 Reynoutrietum japonicae Görs et Müller in Görs 1975. 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. 373-375.