Steve,

I seem to recall in a previous discussion on these two species that one has
a smaller growth habit, but most importantly, the two species bloom at
different times of the year.

Good luck!

-Eric in SF
www.orchidphotos.org

"Steve Weaver" wrote in message
ups.com...
Are there any substantial differences between the species Dendrobium
densiflorum and Den. griffithianum? I've seen a few places on line