Hola Carlo,
I have got my M. basjoo from la bambouseraie in France and from Kobakoba in UK (Sakhalin form). It is a very easy plant to find and I am sure the nurseries Fernado mentioned can have it. You can also check e-bay
Hi Mark
I will be pleased to swap with you a pup o my M. maclayi maclayi but you must keep your fingers crossed until spring
Conrad