Rhynchoglossum  species

Photo by Ron Myhr
Grown at Royal Botanic Garden, Edinburgh

While the plant in the public planting at the RBGE had no label, it seems likely that this is R. notonianum.   The whole planting can be seen here.  Another bed of Rhynchoglossum, grown outside in Florida, illustrates the garden potential of this genus in sub-tropical locales.