This is the only Masdie I've been able to keep alive longer than 6 months!!! But something has been wrong for a few months now. At first I thought it was mites, but I never saw any specks on a white cloth/tissue, and it seems to progress. It's not over the entire orchid mind you, but every leaf eventually succumbs to this. Can any one please help me? I really want to keep this one alive!
Bottom side of a freshly fallen off leaf.
Top of it
This is a pretty progressed leaf. They tend to have black spotting first then progress to a black mat, then do this!
Paul Mc 
My Masdie issue!!!!
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