
As you already know, I am a huge fan of terrestrial orchids and I especially love the genera Phaius. I currently have 3 plants in my collection and i have to say I'm just getting the hang of growing them. I started out last summer with a purchase of Phaius flavus var. maculatus. This is my favourite Phaius species. Here's a link to what the plant and flowers look like:
http://hanamist.sakura.ne.jp/flower/tansiyo/ran/ganzeki.html
I actually think I may have Phaius flavus var. punctatus because the leaves on mine are very spotted with yellow. It's a beautiful species and I almost killed mine! I put the plant outside for the summer in an area that received lots of indirect light with a tiny bit of direct light. It was very obvious my plant didn't like the arrangement or the extreme summer heat. The leaves became yellow and the spider mites took over.

By the time the fall had come around, the plant was nothing more than 3 egg shaped pseuodobulbs. I shook the bulbs out of the pot, and placed them in a plastic ziploc bag with a tiny bit of moss with the hopes of encouraging new growth.

Sure enough, a few weeks later, the front bulb was showing signs of growth and I seperated the bulb, potted it in a tiny plastic pot with sphagnum moss, and enclosed the whole lot in a plactic ziploc bag. The plant is coming along very nicely as you can see. Based on my research, the species is native to southeast Asia where it dwells in very shaded, humid forests and can usually be found growing in moss. This explains why my plant did so poorly before. From speaking with other experienced growers, this species does indeed prefer it on the shady side and high humidity.

My other 2 plants are hybrids. One of them may be a species. Back in January, I received 4 plants, one of which was Phaius grandifolius alba. The other 3 were assorted hybrids all from EFG orchids. It was such a busy time for me and I left them aside far too long and they were in dismal state by the time I tended to them. So I was left with 2 good plants, one of which had no leaves left. You can see from the picture above that the bulb is growing a brand new lead and the other plant (first picture in post) has 2 new leads.
Phaius can become monsters when established. My friends in California and Florida grow them out of doors in their gardens where they become massive clumps.