mini's
Paph henryanum, fowlei, & barbigerum
One could consider micranthum and armeniacum as mini's, single growth plants will bloom in a 2.5 inch pot, but they do mature out much bigger. I have a 25+ growth armeniacum in a 5 inch pot. (sorry guys, I ain't dividing it anytime soon) If I could ever get it to put up more than one flower at a time I amplanning on taking it in for CCM/CCE consideration. The damnable thing is that for this clone, even on a multgrowth plant only the 5 or 6 year old growths will bloom. I figure I retire in 10 years, maybe it will get its CCM by then. Picked it up from Oak Hill in 2000.
other minis
Masdevallia - half a dozen species and hybrids, Orange Ice is a favorite
Dryadella edwalli - got a CCM on a plant in a 3 inch pot. 65 flwrs that smell like a freshly caught bluegill
Pleurothallis grobyi
Restrepia saguineae
I don't consider Dendrobium monoliforme a miniature, the plants get tall and grow to fill 4 inch pots fairly quickly. I have 'Banri Kuo' and the wild type.
Lycaste campbellii, and L. cochlearis start blooming pretty small.
Well, that is a few of the odd things floating around in my collection.
Leo