Nick Upton / Mediterranean sea holly / Pyrenean eryngo (Eryngium bourgatii) flowering on montane pastureland, Covadonga, Picos de Europa, Asturias, Spain, August.

Edwin Giesbers / Sea holly (Eryngium maritimum) growing in sand dune, Menorca, Balearic Islands, Spain, Europe

Juan Carlos Munoz / Dolina depression in limestone cliff, Mediterranean forest with Holm oak (Quercus ilex) forest on slopes. Cantabrian sea in background, aerial view. Liendo Valley, Montana Oriental Costera, Cantabria,...

Nick Upton / Mediterranean sea holly / Pyrenean eryngo (Eryngium bourgatii) flowering on montane pastureland, Covadonga, Picos de Europa, Asturias, Spain, August.

Ernie Janes / Mediterranean sea holly (Eryngium bourgatia) 'Picco blue' flowers in garden border. England, UK.

Ernie Janes / Mediterranean sea holly (Eryngium bourgatia) 'Picco blue' flowers in garden border. England, UK.

Loic Poidevin / Mediterranean sea holly (Eryngium bourgatii) Asturias, Spain,September