Vegetation Science Group

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

Vegetation of the Czech Republic

Alliance XDC
Impatienti noli-tangere-Stachyion sylvaticae Görs ex Mucina in Mucina et al. 1993

The alliance Impatienti-Stachyion includes nutrient-demanding herbaceous vegetation occurring in partially shaded habitats on forest edges, canopy openings and clearings from the lowlands to the alpine timberline. The stands are dominated by tall herbs which also occur in the forest herb layer, but they form dense stands only on more sun-exposed sites. This vegetation type usually develops directly as a consequence of disturbance in forest stands, but it can also develop out of abandoned grasslands or stands of annual weeds. Soils are mesic to wet; unlike in the alliance Geo urbani-Alliarion petiolatae they do not dry out in summer. In contrast to vegetation of the class Epilobietea angustifolii, which is also typical of disturbed forest sites, stands of the Impatienti-Stachyion are rich in nutrient-demanding species and lack many acidophilous species.

Orig. (Mucina et al. 1993): Impatienti noli-tangerae-Stachyion sylvaticae Görs ex Mucina

Syn.: Impatienti noli-tangere-Stachyion sylvaticae Görs 1974 prov. (§ 3b), Atropion bellae-donnae sensu auct. non Aichinger 1933 (pseudonym)

Diagnostic species: Carex pendula. Geranium robertianum

Constant species: Geranium robertianum, Urtica dioica

Source: Sádlo J. (2009): XDC Impatienti noli-tangere-Stachyion sylvaticae Görs ex Mucina in Mucina et al. 1993. 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. 319-320.