Vegetation Science Group

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

Vegetation of the Czech Republic

Association SCA01
Gymnocarpietum robertiani Kuhn 1937

Gymnocarpietum robertiani

Photo on botanickafotogalerie.cz

This association is dominated by the small fern Gymnocarpium robertianum, which forms a branched rhizome spreading extensively within the scree. It occurs on mobile or intermittently stable screes formed of limestone, hard claystone or base-rich volcanic rocks. This vegetation type is more common on screes of natural origin than on anthropogenic screes. Its Czech localities are concentrated in the Bohemian Karst and Moravian Karst, but it is rarely found also in other areas with screes of base-rich rocks.

Nomen mutatum propositum

Orig. (Kuhn 1937): Dryopteridetum Robertianae

Syn. Dryopteridetum robertianae Kaiser 1926 (§ 3d, association of Uppsala School), Dryopteridetum robertianae R. Tüxen 1937 (§ 33, homonym of the same age)

Diagnostic species: Cystopteris fragilis, Gymnocarpium robertianum; Eurhynchium schleicheri. Homalothecium sericeum. Mnium stellare. Tortella tortuosa

Constant species: Geranium robertianum, Gymnocarpium robertianum, Urtica dioica

Dominant species: Gymnocarpium robertianum, Urtica dioica; Homalothecium sericeum

Formal definition: Gymnocarpium robertianum cover > 5 % NOT Group Asplenium ruta-muraria

Source: Sádlo J. (2009): SCA01 Gymnocarpietum robertiani Kuhn 1937. 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. 452-454.