Vegetation Science Group

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

Vegetation of the Czech Republic

Association XBG09
Sisymbrietum altissimi Bornkamm 1974

Sisymbrietum altissimi

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This vegetation type is dominated by Sisymbrium altissimum, accompanied by other annual plants including winter annuals, and some perennials. It occurs on sunny sites with dry, usually sandy and nutrient-poor soils. Typical habitats include roadsides, dumping grounds, disturbed sites in sand pits and around railways. This vegetation type usually appears in the second year after exposure of bare ground. Its phenological optimum is in June and July. In the Czech Republic it has scattered occurrences in warm and moderately warm areas.

Orig. (Bornkamm 1974): Sisymbrietum altissimi

Syn.: Sisymbrio-Lactucetum serriolae Lohmeyer in Tüxen 1955 (§ 2b, nomen nudum), Lactuco-Sisymbrietum altissimi Bornkamm 1974

Diagnostic species: Bromus commutatus. B. tectorum. Conyza canadensis. Crepis foetida subsp. rhoeadifolia. Senecio viscosus, Sisymbrium altissimum, S. loeselii. Tripleurospermum inodorum

Constant species: Arrhenatherum elatius. Artemisia vulgaris. Chenopodium album agg., Cirsium arvense. Convolvulus arvensis. Conyza canadensis. Echium vulgare, Sisymbrium altissimum, Tripleurospermum inodorum

Dominant species: Sisymbrium altissimum, Tripleurospermum inodorum

Formal definition: Sisymbrium altissimum cover > 25 %

Source: Lososová Z. (2009): XBG09 Sisymbrietum altissimi Bornkamm 1974. 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. 151-153.