[OGD] Eulophia petersii

Since the subject of African orchids came up, I thought I'd mention that I 
currently have Eulophia petersii in bloom on a 6-7 foot inflorescence.  I have 
noticed that each rhizome lead will produce either a new growth or an 
inflorescence, but not both in a single year.  It's only when the rhizome 
branches that the plant produces both a new growth and an inflorescence, one on 
each lead.  

I suppose that growing such an enormous inflorescence takes too much time and 
effort to allow a new pseudobulb in the same growing season.  Are there other 
orchids that have this very slow, deliberate growth pattern?

FWIW, I have tried both selfing and crossing to another plant (though maybe 
they're the same clone) but have never obtained viable seed.

Nick
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