I had the privilege of eating Copelandia Cyanescens (sp?), labeled as "Hawaiian" mushrooms about five years ago in Amsterdam. They are very small muchrooms, all under an inch, and like Zakalwe said, half a pack was the suggested dose, whole pack was heavy dose. I'm not 100% sure on this but I think a whole pack was only 1g dried. These were also the only dried mushrooms sold in smart shops in Amsterdam. I was very experienced with mushrooms and psychedelics in general and I ate the whole pack.
My experience on these mushrooms is still to this day the experience I judge all other mushroom experiences by. It was simply amazing. Elevated mood, strong body buzz and visuals that reminded me more of a strong LSD trip than anything else. They lasted a LONG time too, for shrooms anyway. I'd say a solid 8 hours +. Usually shrooms only last about 6+ hours for me. My fiance and I were traveling with another couple throughout Europe for about 20 days and at that point we were kind of at odds with the other couple over trivial stuff that just added up. Because of this I was nervous to trip with them. This shared experience, however, completely healed all of the negative feelings, it wasn't even something we talked about, we all just kind of knew that this underlying feeling we'd all had was silly and that it was time for it to end.
Sorry for the full trip report, got carried away reminiscing, but I would suggest that anyone with any interest in psychedelics give these particular mushrooms a try. I've tried at least half a dozen strains of psychedelic mushrooms, and these are indeed my all time favorites.