It's a hybrid, probably a primary cross between a Zygo species and Aganisia (Acacallis) cyanea -- or even a 2nd or 3rd generation hybrid including these species along with others. They became popular about 10 years ago and are continuing to be further hybridized. The primary crosses go under Zygonisia, but the later crosses often include a few other species and the name changes from Zygonisia. I clobbered one I had several years ago. Probably kept it too wet. Here is a link that might be useful: Zygonisia hybrids

The culture sheet that came with mine suggested bright light, intermediate temps and lots of water. I've had mine growing in SH culture on a south facing window shaded lightly by a deciduous tree. It bloomed nicely. I saw a more mature plant at our show yesterday in a vendor display. It was gorgeous, had four spikes!

Hi Howard, Thanks for answering my post. If I could have a conservatory, trust me, all my fantasies would be fullfilled! I would LOVE one! Even a greenhouse would be okay, but I'm not there yet. The porch I'm using is very small, about 10 X 10. There are double sliding doors (6 ft) on the east and west sides (roughly) and a glass door and window on the north end. So the light is extremely good. The porch is an actual room but it's built on blocks so the floor can't be insulated and as far as I know there is no other insulation, so wintering plants there just can't happen. Besides, the house is skewed in a weird way that the porch gets no direct sun in winter at all. Stupid builder! One reason I moved my orchids out for the summer is because I read they need a change of 15 degrees from day to night. They will get that on the porch, especially in fall before I bring them back in. Also, I have Low E glass in my house and regular glass/screens on the porch which will give them higher light than they can get in the house (unless I go into some elaborate lighting). Third, yes there is A/C in the house so they will get much higher humidity in general on the porch than they would inside in the summer (I use a humidifier near them in winter). So the porch is about as good as I can get right now for summertime growing. Our temps for the rest of the summer will get down no lower than 60 and won't get above a 100. (lately you don't know what the heck the weather is going to do, but I'm assuming...) Do you think this new Zygonisia will work out at least as well there as my catts are doing? They are growing really well. Thanks again, Chris ps. if somebody would like to donate a nice conservatory to the cause I would be one happy girl! ;-)))

I take it back again. I do have something else blooming besides the Pleuro. alata. Aerangis kirkii sent up another spike underneath the leaves, and I didn't even see it until lo and behold, one bud bloomed. You can't see it from the top, but if you look from the side, suddenly there it is. This kirkii is crazy. Single blooms have been popping up on and off all summer. And now a hidden spike underneath, a more visible spike on the side, and what looks like the beginnings of a spike off the other side. The obvious spike is coming up from the spot where it has been blooming its one flower at a time, previously. I guess we'll have to wait til next year to decide if this is normal behavior for this one. It's rather interesting, keeps you on your toes, and gives me a reason to pay close attention to it (which I obviously haven't been lately, if a spike could start blooming out of nowhere.)