isomerous

[ahy-som-er-uh s] /aɪˈsɒm ər əs/
adjective
1.
having an equal number of parts, markings, etc.
2.
Botany. (of a flower) having the same number of members in each whorl.
Origin
1855-60; iso- + -mere + -ous
British Dictionary definitions for isomerous

isomerous

/aɪˈsɒmərəs/
adjective
1.
having an equal number of parts or markings
2.
(of flowers) having floral whorls with the same number of parts Compare anisomerous