Besides hardscape, species limit is the main thing that defines Dutch and not Dutch
Its not just an arbitrary rule. Its purpose is to force the use of big groups instead of lots of small ones. Big groups create a stronger visual impression, but most importantly it allows the group to become a certain shape in a certain color/texture. These "shapes of color" are the building blocks of a plant-only aquscape. Thats the medium youre working with, shapes of color. The shapes are arranged to create depth and contrast, etc, and the overall finished product
Marian's tank wasnt over the limit very much. The height thing Marco mentioned, plus having so many reds beside reds, the lack of height contrast between adjacent groups, all these combined to make it 'not Dutch'. Its still a freakin amazing display of skills and beauty, it just doesnt belong in the Dutch group. Like taking the the best poodle in the world to a German Sheppard show. No matter how good it is it simply wouldnt belong
I do wish there was a category for non-Dutch plant-only tanks. But there has to be some criteria in place, not only to qualify but to judge one tank against another one. When you start naming things like contrast and depth pretty soon youre back at Dutch rules. Plus bigger groups would almost always "score" better than having 2-3 stems of 100 species, no matter how well its arranged
Thats the wall I hit when trying to imagine what the criteria would be and what would score higher than another. It reads same as Dutch criteria just without the species limit
As for the name, imo it shouldnt take more than one word to cover it, two at the max. So far "garden" style is as good as anything. Makes about as much sense as calling all these fabulous diaramas "nature style"