C. tigrina is the valid name for "C. leopoldii." (I have published that in 1984) Now, if you consider "C. leopoldii" a good species, then C. tigrina is not the same as C. guttata.
What confused me is that at one time they were saying that C. leopoldii was the same as C. guttata. I googled on some pictures. All the pictures of C. guttata, including C. guttata fma. alba, were what has always been C. guttata. Pictures labeled C. tigrina do look like a different species. The problem is that I think a lot of what are labeled C. leopoldii are actually C. guttata, not tigrina.
Iris
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