obdiplostemonous
/ˌɒbdɪpləʊˈstiːmənəs/Botany
adjective
Diplostemonous with the disposition of the two stamen-whorls reversed; having the stamens of the outer whorl opposite the petals and those of the inner whorl opposite the sepals; (of stamens) arranged in this way.
Origin
Late 19th century; earliest use found in Nature: a weekly journal of science. From ob- + diplostemonous.