pe·lo·ri·a 
(pə-lôrē-ə)
(pə-lôrē-ə)n.
Unusual regularity in the form of a flower that is normally irregular.
[New Latin, from Greek pelōros, monstrous, from pelōr, monster; see kwer- in the Appendix of Indo-European roots.]
pe·loric (-lôrĭk, -lŏr-) adj.