Re Cerinthe retorta

Thanks for info. both from here and from over there! Well, if there's
a difference, darned if I can, in practice, spot it - and I'm sure it
means litte if anything in a garden context. Incidentally, re
flowering times, in this cool moist (northern UK) climate, both C.
retorta and C. major go on flowering virtually until the autumn (end
of August to mid Sept, at least). Certainly in Yorkshire 10 days ago
both species were only just coming into flower - and were at almost
exactly the same stage of development. 
Tim Longville
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