Difference between Yumas and Ricordeas

[Brokken]

I'm still not sure that I understand the difference between a Yuma and a Ricordea. What are the basic morphological differences between the two of them?

[EtOH_is_good]

i believe the difference is the mouth. on a florida, there are not bumps (i forgot the scientific term; see borneman's book), while on yuma there are.

[yoshiod9]

also, florida rics are more likely to have numerous mouths than a yuma's (usually) one mouth.