I have three very small oncidiums. NoID, two yellow and one deep wine. The leaves on the wine one is smaller than the two yellow lip/wine pedal, The yellows are about 18 to 24 inch stem w/ 7 to 9 blossums. leaves 5 to 6 inches Ray said they appear to be mule ear. The apron/skirt a bright lemon yellow.
The wine one, smaller flowers, 5 point star petals, wine lip rather squarish with white small misshapen dot and center of the center of the bloom is pronounced, about 0.5 cm in length and the only all white part. I forget the name of that part of orchids, ) it appears very delicate overall. with shorter, more narrow leaves.
my ? is since they came in 2.25 inch pots, any possibility they are a true mini?