The first Trisetella I ever saw was T. heubneri (triglochin). It was in J and L Orchids' display at the Milwaukee Orchid Society show in 1984. I fell in love, but I was afraid to try such a small and frail-looking plant. I got this one from J and L, and it has done pretty well for me. It seems a little slow to establish, but now that it has taken hold, it appears to be doing fine.
I'm interested to see how my definitions have changed, too.
I remember thinking of this as a "tiny" orchid.
Now that I'm growing it, I think of it as "mid-sized" with "large" blooms.
The Trisetellas were formerly a part of the Masdevallia complex, and were one of the earlier genera split off from that group.
[IMG]http://farm6.static.flickr.com/5007/5256754464_aa10e25094.jpg[IMG]