Nigel Cattlin / Houndstongue (Cynoglossum officinale) on shingle. Chesil Beach, Dorset, England, UK. May.

Andy Sands / Green Hounds Tongue (Cynoglossum germanicum) rare short lived perennial herb, RDB, Oxfordshire, England, UK, June

Andy Sands / Green Hounds Tongue (Cynoglossum germanicum) rare short lived perennial herb, RDB, Oxfordshire, England, UK, June

Andy Sands / Green hounds tongue (Cynoglossum germanicum) rare short lived perennial herb, RDB, Oxfordshire, England, UK, June

Andy Sands / Green hounds tongue (Cynoglossum germanicum) A rare short lived perennial herb, RDB, Oxfordshire, England, UK, June

Pascal Pittorino / Common blue butterfly (Polyommatus icarus) male resting on Blue hound's tongue (Cynoglossum creticum) flower, Var, Provence, France, April.

Albert Lleal / Blue Hound's Tongue (Cynoglossum creticum) noxious pasture weed seed with hooks to enable dispersal

Paul Harcourt Davies / Maiella Houndstongue (Cynologlossum magellense) in flower, Campo Imperatore, Gran Sasso, Appennines, Abruzzo, Italy, June

Paul Harcourt Davies / Maiella Houndstongue (Cynoglossum magellense) in flower, Campo Imperatore, Gran Sasso, Appennines, Abruzzo, Italy, May

Paul Harcourt Davies / Cretan Houndstongue (Cynoglossum creticum) in flower, Akrotiri near Chania, Crete, April

Edwin Giesbers / Blue hound's-tongue (Cynoglossum creticum) flowers, Menorca, Balearic Islands, Spain, Europe

Paul Harcourt Davies / Apennine houndstongue (Cynoglossum apenninum / magellense) a plant of screes and short turf in the mountains of central Italy, Apennines, Italy