Vegetation Science Group

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

Vegetation of the Czech Republic

Association THD06
Astragalo exscapi-Crambetum tatariae Klika 1939

Astragalo exscapi-Crambetum tatariae

Photo on botanickafotogalerie.cz

This is an open-steppe vegetation type at disturbed sites of recent landslides, abandoned fields or around rabbit colonies. It occurs on south-facing slopes in the warm, dry region of southern Moravia, usually over loess or calcareous sand or sandstone. Such habitats are colonized by competitively weak continental steppe plants, such as Astragalus exscapus, Crambe tataria, Iris pumila and Taraxacum serotinum. After several years of succession, vegetation of the formerly disturbed sites would develop into a closed grassland of the alliance Cirsio-Brachypodion pinnati or Festucion valesiacae, and the species of open loess steppe would disappear. However, they may rapidly colonize newly disturbed habitats nearby.

Nomen inversum propositum

Orig. (Klika 1939a): Crambe tatarica-Astragalus exscapus-Assoziation Klika 1938

Diagnostic species: Achillea pannonica, A. setacea, Adonis vernalis, Allium sphaerocephalon, Arenaria serpyllifolia agg., Aster linosyris, Astragalus austriacus, A. exscapus, A. onobrychis, Bromus inermis, Campanula sibirica, Carex supina, Cerastium pumilum s. l., Chamaecytisus austriacus, C. ratisbonensis, Crambe tataria, Dorycnium pentaphyllum s. l., Eryngium campestre, Erysimum diffusum, Festuca rupicola, F. valesiaca, Gagea pusilla, Galium glaucum, Hieracium bauhini, Inula ensifolia, I. hirta, I. oculus-christi, Iris pumila, Jurinea mollis, Koeleria macrantha, Plantago media, Potentilla arenaria, Salvia nemorosa, Seseli pallasii, Stipa pennata, S. pulcherrima, S. tirsa, Taraxacum serotinum, Teucrium chamaedrys, Thymus glabrescens, Verbascum phoeniceum, Viola ambigua

Constant species: Achillea pannonica, Arenaria serpyllifolia agg., Asperula cynanchica, Astragalus austriacus, Campanula sibirica, Carex humilis, Crambe tataria, Dorycnium pentaphyllum s. l., Eryngium campestre, Festuca rupicola, F. valesiaca, Galium glaucum, Inula oculus-christi, Iris pumila, Jurinea mollis, Koeleria macrantha, Plantago media, Potentilla arenaria, Salvia nemorosa, S. pratensis, Taraxacum serotinum, Teucrium chamaedrys, Thymus glabrescens, Viola ambigua

Dominant species: –

Formal definition: Group Iris pumila

Source: Chytrý M. (2007): THD06 Astragalo exscapi-Crambetum tatariae Klika 1939. In: Chytrý M. (ed.), Vegetace České republiky. 1. Travinná a keříčková vegetace [Vegetation of the Czech Republic. 1. Grassland and Heathland Vegetation]. Academia, Praha, pp. 423-425.