the first tetraploid seemed to have the plant, but not the flower. work was needed but they kept on, & were able to get new colors like pink which can't appear in diploids as it need to be present 4 times in order to appear. (long history of trying for pink in TBs.)
The tets are now available. I suggest people wanting to know iris history get a copy of 'The World of Iris' from AIS. Even now irises have progressed since that book was written. Miniature Talls are a height from 8" to 26" as are the IBs & BBs. they are more put together at about 20 inches in my opinion. I'm sorry that all photos on this computer are John's & my plants as all our old photos are on slides.
Elfin Shadows (my plant)
Twilight Calm) (shows size of the flower.) Take a ruler & measure 3" X3' on your hand. Look at photos in catalogues like Mid-America.