Nick Upton / White Stonecrop (Sedum album) clump flowering in a limestone rock crevice, near Sotres, Picos de Europa, Asturias, Spain, August.

Nick Upton / White Stonecrop (Sedum album) clump flowering in a limestone rock crevice, near Sotres, Picos de Europa, Asturias, Spain, August.

Dave Bevan / White-tailed bumblebee (Bombus lucorum) nectaring on Sedum (Sedum), Carmarthenshire, Wales, UK. September.

Chris Mattison / Succulent (Crassula tecta) flower in cultivation, endemic to South Africa. Image taken using digital focus-stacking.

Alex Hyde / White stonecrop (Sedum album) Nordtirol, Austrian Alps. June.

Adrian Davies / English Stonecrop (Sedum anglicum) Cwm Idwal, Snowdonia, Wales, UK, July.

Philippe Clement / White stonecrop (Sedum album) flowering among rocks, Ardennes, Belgium, July

Philippe Clement / White stonecrop (Sedum album) flowering among rocks, Ardennes, Belgium, July

Wild Wonders of Europe / Möllers / Close-up of White stonecrop (Sedum album) flowers showing anthers, Pont-du-Chateau, Auvergne, France, August 2010

Wild Wonders of Europe / Möllers / White stonecrop (Sedum album) flowering, Pont-du-Chateau, Auvergne, France, August 2010

MYN / Niall Benvie / Orpine (Sedum telphium) in flower, Scotland, UK meetyourneighbours.net project

Brian Lightfoot / White stonecrop {Sedum album} flowering in stone wall, Scotland, UK