| Country | Spain |
| Province | Cantabrian mountains (Asturia, Cantabria, Basque country), western Pyrenees; France |
| References | Braun-Blanquet 1967b; Díaz González & Fernández Prieto 1987; Díaz González & Fernández Prieto 1994a; Fernández Prieto & Vázquez 1985(1987); García González 1990; Hernandez Hernandez 1987; Ladero Alvarez, Díaz González, Penas Merino, Rivas-Martínez & Valle Gutierrez 1987; Loidi Arregui 1983a; Loidi Arregui 1983b; Loidi Arregui 1987; Lôpez Pacheco 1988; Lôpez Pacheco & Puente García 1987; Navarro Aranda 1982; Penas Merino, García González & Herrero Cembranos 1995; Perez Morales 1987; Rivas-Martínez 1962; Rivas-Martínez 1964; Rivas-Martínez 1973; Rivas-Martínez 1975; Rivas-Martínez 1983; Rivas-Martínez 1987; Rivas-Martínez, Bascones, Díaz González, Fernández-González & Loidi Arregui 1991a; Rivas-Martínez, Bascones, Díaz González, Fernández-González & Loidi Arregui 1991b; Rivas-Martínez, Díaz González, Fernández Prieto, Loidi Arregui & Penas Merino 1984; Tüxen & Oberdorfer 1958 |
| Sum of all taxa | 28.00 |
| Sum of zonal taxa | 25.90 |
| Sum of zonal woody angiosperms | 8.00 |
| Sum of % SCL + LEG | 35.00 |
| Sum of % D-HERB + M-HERB (ZONAL HERB) | 69.11 |
Cantabrian-Euscaldian beech forests (Fagus sylvatica), partly with Betula pubescens subsp. celtiberica and Quercus petraea, with Luzula sylvatica subsp. henriquesii, Saxifraga hirsuta, Saxifraga spathularis
a) Blechno spicant-Fagetum sylvaticae (Tüxen & Oberdorfer 1958) Rivas-Martínez 1962 (= Blechno-Fagetum ibericum Tüxen & Oberdorfer 1958, Saxifrago spathularis-Fagetum (Tüxen & Oberdorfer 1958) Rivas-Martínez 1975, Luzulo henriquesii-Fagetum Rivas-Martínez et al. 1984); b) Saxifrago hirsutae-Fagetum sylvaticae Braun-Blanquet 1967.
a) Acidic-soil, mesophytic, orocantabrian tall beech forests with scattered Betula pubescens subsp. celtiberica and Quercus petraea. Herb layer with Luzula sylvatica subsp. henriquesii, Saxifraga spathularis, S. hirsuta, Crepis lampsanoides, Vaccinium myrtillus.b) Montane Cantabro-Atlantic beech forests as a western vicariant; tall beech forests with an undergrowth of acidophilous grasses such as Luzula sylvatica subsp. sylvatica, Deschampsia flexuosa and dwarf shrubs (Vaccinium myrtillus, Erica vagans).
Fagus sylvatica, Ilex aquifolium; a) Betula pubescens subsp. celtiberica, Saxifraga spathularis, Saxifraga hirsuta, Blechnum spicant, Luzula sylvatica subsp. henriquesii, Crepis lampsanoides, Stellaria holostea; b) Saxifraga hirsuta, Blechnum spicant, Luzula sylvatica subsp. sylvatica, Vaccinium myrtillus, Erica vagans
France: various forms depending on location, trophy and moisture.Spain: Orocantabrian acidophilous beech forests:-scilletosum lilio-hyacinthi: on deep and nutrient-rich soils of valley bottoms and mountain bases;-coryletosum avellanae: on deep moist soils with Corylus avellana and Fraxinus excelsior that transform to streamside oak-ash forests.
Three subassociations (vicariants):-fagetosum sylvaticae: typical subassociation in the Cantabrian-Basque section;-scilletosum lilio-hyacinthi in eastern Basque with demanding species such as Scilla lilio-hyacinthus, Galium odoratum;-luzuletosum pilosae in the region of Roncevalles with the differential-species Luzula pilosa and Veronica montana.
Rock communities of the Asplenietalia billotii-obovati; stream concurrent oak-ash forests.
subalpine and oroMediterranean scrubs (C25, C26), soil-acidic mixed oak forests (F14, F15, F24, F25), mixed oak-ash forests (F33), species-rich beech and fir-beech forests (F138), downy oak forests (G41), Quercus ilex subsp. rotundifolia-forests (J11), open Juniperus thurifera woodlands (K28).
Braun-Blanquet 1967b; Díaz González & Fernández Prieto 1987; Díaz González & Fernández Prieto 1994a; Fernández Prieto & Vázquez 1985(1987); García González 1990; Hernandez Hernandez 1987; Ladero Alvarez, Díaz González, Penas Merino, Rivas-Martínez & Valle Gutierrez 1987; Loidi Arregui 1983a; Loidi Arregui 1983b; Loidi Arregui 1987; Lôpez Pacheco 1988; Lôpez Pacheco & Puente García 1987; Navarro Aranda 1982; Penas Merino, García González & Herrero Cembranos 1995; Perez Morales 1987; Rivas-Martínez 1962; Rivas-Martínez 1964; Rivas-Martínez 1973; Rivas-Martínez 1975; Rivas-Martínez 1983; Rivas-Martínez 1987; Rivas-Martínez, Bascones, Díaz González, Fernández-González & Loidi Arregui 1991a; Rivas-Martínez, Bascones, Díaz González, Fernández-González & Loidi Arregui 1991b; Rivas-Martínez, Díaz González, Fernández Prieto, Loidi Arregui & Penas Merino 1984; Tüxen & Oberdorfer 1958
V. Voggenreiter based on documents by Rivas-Martínez; J. Loidi; A. Penas Merino and L. Herrero Cembranos, completed by C. Hettwer based on documents by J.-C. Rameau