Mystery plant ID with spots
 

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I've had this orchid for about 4 months but I don't know the genera. There have been small irregular yellowish spots for at least 2 months but I don't see any bugs (growing in g/h now). It's growing in chc and gets high light 3-4000 fc. Any help will be appreciated.

An epidendrum or hybrid?

I don't mean to look brain-dead here 'cause I don't keep up with genera name changes but it looks like a dendrobium cane....

That looks like an Epidendrum to me.

I agree, it looks like a reed stemmed Epidendrum. It may not be getting enough sun (believe it or not). I have a few of these and they aren't happy unless they are in almost full sun...like any other plant in this alliance, they turn a little reddish or purplish (are those real words?) when they are in the light requirements they prefer....as far as the spots...it could be scale...you may consider looking over them very carefully where you've noticed the spots and see if you can see a round tan bump in the center of the yellow spot...if so, pull out the rubbing alchohol and the q-tips and they will come right off!

doc, this has nothing to do with name changes. reed stemmed epidendrums can easily be mistaken for hard cane dendrobiums, but they're part of the cattleya alliance. the epis tend to have more evenly spaced leaves, and will grow aerial roots if the humidity is high enough. i can't say for certain, but this one looks like an epi to me.

I only have one epidendrum but the university I go to has more in their greenhouses. Those canes look a little thick to me. I agree that the regularity of the leaves is more typical of epidendrum than dendrobium though, so maybe it's just a beefy one, like Arnold Schwarzidendrum. ;) The leaves also look too dark. Most of the ones I've seen are a medium to light green. Mine also has a few purple streaks on the stem. Take irphrog's advice and give it a bit more light! :biggrin:

:goodluck:

It is an Epidendrum, not a Dendrobium.

The markings are simple physical damage - likely months old. The wound tissue is just a different color, thats all.

The plant is doing fine - don't change a thing. If the new growths mature and do not flower, then consider sowly increasing the light levels. The leaves are not so dark green to mak me think it is getting too little light.

Hope that helps, Eric