S33n Genista florida fields

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Description

Tall retamoid scrub in deep, well-drained and occasionally dry siliceous soils (typically, moraines and colluvia of coarse blocks) in successional relation to montane beech and oak forests of the units T182 and TB1y, which it replaces both ephemerally in episodic clearings or, more permanently, in pastoral landscapes, where these scrubs are periodically removed to gain pastures mostly referable to R43z. At lower elevations, Genista florida can dominate permanent scrubs in rocky siliceous outcrops where too shallow and patchy soils prevent the development of a dense tree canopy. It is recognised by EUNIS, but only at an unsatisfactory level V and lumping it with our S33z, the creation of a new regional level IV unit becoming thus necessary.

Floristic Composition

Frequent species

Genista florida 1, Erica arborea 0.69, Cytisus scoparius 0.62, Pteridium aquilinum 0.41, Teucrium scorodonia 0.38, Conopodium majus aggr. 0.28, Agrostis capillaris 0.26, Avenella flexuosa 0.26, Helictochloa marginata 0.26, Digitalis purpurea 0.25, Arenaria montana 0.24, Galium saxatile 0.22, Quercus pyrenaica 0.2, Vaccinium myrtillus 0.2, Cytisus cantabricus aggr. 0.19, Orobanche rapum-genistae 0.19, Dactylis glomerata 0.18, Calluna vulgaris 0.17, Cytisus oromediterraneus 0.15, Agrostis castellana 0.15, Rumex acetosella 0.14, Stellaria holostea 0.14, Potentilla erecta 0.14, Cytisus multiflorus 0.14, Hypochaeris radicata 0.13, Silene nutans 0.12, Sorbus aucuparia 0.11, Jasione montana 0.11, Genista obtusiramea 0.1, Erica australis 0.1, Holcus mollis 0.1, Sedum forsterianum 0.1, Hypericum richeri 0.09, Viola riviniana aggr. 0.09, Cytisus striatus 0.09, Arrhenatherum elatius 0.09, Achillea millefolium 0.08, Ceratocapnos claviculata 0.08, Asphodelus albus 0.08, Adenocarpus complicatus aggr. 0.08, Gentiana lutea 0.08, Phalacrocarpum oppositifolium 0.08, Lavandula pedunculata 0.08, Thymus mastichina 0.07, Ulex minor aggr. 0.07, Betula celtiberica 0.07, Pilosella officinarum 0.07, Erica vagans 0.07, Festuca elegans 0.07, Digitalis parviflora 0.06, Clinopodium vulgare 0.06, Geranium lucidum 0.06, Halimium alyssoides 0.06, Festuca rubra 0.06, Festuca nigrescens 0.06, Ilex aquifolium 0.06, Neoschischkinia truncatula 0.06, Daboecia cantabrica 0.06, Cirsium palustre 0.05, Festuca rothmaleri 0.05, Rubus ulmifolius 0.05, Galium broterianum 0.05, Thymus pulegioides aggr. 0.05, Rosa micrantha 0.05

Regional distribution

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