R1A4 Sub-Atlantic very dry calcareous grassland

New search

Description

Open formations dominated by xerophytic grasses and chamaephytes, interpretable as a calcicolous analogue of R1R2 and, similarly, intermingled with short ephemeral swards rich in annuals, in this case referable to R13x. In the study area this habitat occurs mainly in the eastern transitions between subatlantic and pre-Pyrenean continental Mediterranean climates, often in a pasture-mediated mosaic with the drier variants of S73x

Floristic Composition

Frequent species

Bromus erectus aggr. 0.7, Koeleria vallesiana 0.67, Thymus praecox 0.51, Carthamus mitissimus 0.46, Potentilla tabernaemontani 0.45, Festuca lambinonii 0.45, Plantago lanceolata 0.43, Lotus corniculatus 0.42, Helictochloa pratensis 0.41, Pilosella officinarum 0.39, Coronilla minima 0.37, Carex humilis 0.36, Sanguisorba minor 0.34, Anthyllis vulneraria 0.31, Eryngium campestre 0.31, Medicago lupulina 0.29, Galium pumilum aggr. 0.27, Seseli montanum 0.27, Helianthemum oelandicum 0.27, Briza media 0.26, Teucrium pyrenaicum 0.25, Thymus vulgaris 0.25, Carex caryophyllea 0.24, Teucrium chamaedrys 0.24, Bellis perennis 0.23, Scabiosa columbaria 0.23, Carex flacca 0.22, Helianthemum apenninum 0.22, Plantago media 0.21, Brachypodium pinnatum 0.2, Brachypodium retusum 0.2, Helianthemum nummularium 0.2, Dorycnium pentaphyllum 0.19, Asperula cynanchica 0.19, Festuca ovina 0.18, Clinopodium alpinum 0.18, Aphyllanthes monspeliensis 0.18, Trifolium pratense 0.17, Genista scorpius 0.17, Linum catharticum 0.17, Dactylis glomerata 0.17, Galium verum 0.16, Blackstonia perfoliata 0.16, Geum sylvaticum 0.16, Colchicum montanum 0.16, Astragalus monspessulanus 0.16, Achillea millefolium 0.15, Globularia vulgaris 0.14, Hippocrepis comosa 0.14, Thymelaea ruizii 0.14, Galium lucidum 0.14, Hypochaeris radicata 0.14, Sedum album 0.13, Festuca nigrescens 0.13, Arenaria grandiflora 0.13, Onobrychis conferta 0.13, Ranunculus bulbosus 0.12, Brachypodium phoenicoides 0.12, Asperula pyrenaica 0.11, Ononis pusilla 0.11, Thesium humifusum 0.11, Argyrolobium zanonii 0.11, Agrostis capillaris 0.11, Catananche caerulea 0.11, Thrincia saxatilis aggr. 0.1, Potentilla montana 0.1, Cerastium arvense 0.1, Erica vagans 0.1, Trifolium campestre 0.1, Lavandula latifolia 0.09, Festuca marginata 0.09, Linum appressum 0.09, Helictochloa bromoides 0.09, Carex halleriana 0.09, Daucus carota 0.09, Trifolium repens aggr. 0.08, Phleum pratense aggr. 0.08, Ononis spinosa 0.08, Genista hispanica 0.08, Poa alpina 0.08, Prunella laciniata 0.08, Bellis sylvestris 0.08, Phyteuma orbiculare 0.08, Filipendula vulgaris 0.07, Aira caryophyllea 0.07, Coris monspeliensis 0.07, Trifolium ochroleucon 0.07, Thalictrum tuberosum 0.07, Rhinanthus pumilus 0.07, Leucanthemum vulgare 0.07, Prunella hyssopifolia 0.07, Linum narbonense 0.07, Glandora diffusa 0.06, Sherardia arvensis 0.06, Erinus alpinus 0.06, Dianthus pungens 0.06, Trifolium montanum 0.06, Silene nutans 0.06, Santolina ericoides 0.06, Conopodium majus aggr. 0.06, Trifolium scabrum 0.06, Campanula rotundifolia aggr. 0.06, Bupleurum baldense 0.05, Euphorbia flavicoma 0.05, Ononis striata 0.05, Crepis albida 0.05, Leucanthemum pallens 0.05, Helichrysum stoechas 0.05, Alchemilla hoppeana aggr. 0.05, Carlina corymbosa 0.05, Arabis scabra 0.05, Cerastium fontanum 0.05, Trisetum flavescens 0.05

Regional distribution

Known occurrences and potential area of occupancy of the habitat type in the study region.
© 2025 IBEROATLANTICA
Citation: IBEROATLANTICA – Flora and Habitats of the Cantabrian Mixed Forests ecoregion.
www.IberoAtlantica.eu