So here is my understanding on NoID's and why they can't be judged. Because they are hybrids they cannot be judged because the origin cannot be determined, where-as an actual species has a "parent".
Just like dog shows. They will not judge a mixed-breed because there are no papers or anything to prove exactly what species are in the dog. They will only judge pure-breds.
Is this a good example of why NoID's are not judged?
You are close. A hybrid must have the parent names on the entry form. If the hybrid hasn't been registered yet, it would give the two crosses that created that particular hybrid.
A species doesn't need to have that type of ID because he can only come from the same species. You don't even have to put C. maxima "#1" x maxima "biggie". It would be entered as C. maxima and you check the box that states it is a species.