This will be the last of this blog, I need to spend time updating my own website. Likely, I'll start a "currently blooming" page there, but it just needs a whole lot of refreshing, has been badly neglected.
Thanks! Yes, Cleisocentrons are some of the very few truly blue orchids. (The particular one shown this month isn't mine but I have some that have bloomed at other times) The color is more intense in cooler weather, and some cultivars are darker than others. There are a few truly blue Dendrobiums (like parvulum), Thelymitras of course. But most of what is called "blue" is blue-violet (coerulea).