I believe it was Steve who lost his entire Phal collection over a couple of
years. No resolution as to what it was.

I have recently dealt with phythium. Lucky me. Very nasty disease, but it
didn't look like what Bruce (or Steve, for that matter) pictured.

Diana

"tenman" wrote in message
...
BruceM wrote:
Dendrobium, west facing window, 1 " faux blinds cracked about 1.5 inches
open. Plant about 6 inces from blind

Has that brown / red sand look like a spider mite infestation, but high
power magnification shows no mites, and it does not run or rinse off.
Close viewing looks like pitting of the leaves


http://home.tx.rr.com/lec/1.jpg
http://home.tx.rr.com/lec/2.jpg
There was a great deal of discussion at one time about this problem. I
don't believe it's from comet or anything else like it. It was called
'mocrofungus' by some, but neither pesticides nor fungicides worked on it.
Some guessed it was an as-yet unID'd virus. From all the postings I read
it seemd it was most often eventually fatal to the plants, but some said
they had plants eventually (2-4 years) grow out of it. There was some
speculation as to its contagiousness and most folks who had it on a plant
pitched the plant just in case.

I don't think there was ever a resolution to the issue, but it seemed to
affect a lot of collections.