Vegetation Science Group

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

Vegetation of the Czech Republic

Association XBG11
Conyzo canadensis-Lactucetum serriolae Lohmeyer in Oberdorfer 1957

Conyzo canadensis-Lactucetum serriolae

Photo on botanickafotogalerie.cz

This association is usually dominated by two species, Lactuca serriola, occurring in the upper layer, and Conyza canadensis in the lower layer. Monodominant stands of one of these two species are also common. They occur on warm and sunny sites with shallow, dry, sandy to stony, nutrient-poor soils. They are typical of initial stages of secondary succession, and are soon replaced by other vegetation types with perennial species. This type is common in lowland and colline areas of the Czech Republic, but also occurs in slightly cooler areas.

Nomen mutatum propositum

Orig. (Oberdorfer 1957): Erigero-Lactucetum Lohm. 50 mscr. (Erigeron canadensis = Conyza canadensis, Lactuca serriola)

Diagnostic species: Conyza canadensis. Lactuca serriola. Senecio viscosus; Bryum argenteum

Constant species: Artemisia vulgaris. Conyza canadensis. Lactuca serriola. Taraxacum sect. Ruderalia. Tripleurospermum inodorum

Dominant species: Conyza canadensis, Lactuca serriola; Ceratodon purpureus

Formal definition: (Conyza canadensis cover > 25 % OR Lactuca serriola cover > 25 %) NOT Group Onopordum acanthium NOT Sisymbrium altissimum cover > 25 %

Source: Lososová Z. (2009): XBG11 Conyzo canadensis-Lactucetum serriolae Lohmeyer in Oberdorfer 1957. 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. 155-158.