Hard to say for sure from the photos, but it kind of looks like a Den. loddigesii. If it is, it's not too terribly unhealthy-looking. Older canes of these go deciduous but often still flower for several years. Culture-wise I grow mine as bright as I can get in a windowsill, with water about every other day and weak fertilizer about every other week this time of year. They seem healthy and vigorous though I could probably get them to grow faster with somewhat more frequent fertilizer. This is one of those Dendrobiums that is said to bloom better (in spring to early summer) with a bright, mostly dry winter rest with no fertilizer. They seem to keiki very freely, and I've seen some gorgeous specimens of these mounted on plaques or balls of treefern. Two of mine are from divisions obtained this past spring and they've been establishing very nicely, one in a small basket with treefern and sphagnum and one on a chunk of cork with a sphagnum pad. My older one is potted in straight bark and seems to like that fine, too. Hope this helps!
Nat
Last edited by gnathaniel; 07-23-2009 at 02:29 AM..
Reason: add more info
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