ektexine

ektexine

(ɛkˈtɛksɪn; ɛkˈtɛksaɪn)
n
the outer of the two layers that make up the exine
References in periodicals archive ?
Orbicules and the ektexine are homologous sporopollenine concretions in Spermatophyta.
i], the positive and negative endpoints of an external electrode are linked to the center fine line and ektexine of the metal cylinder.
Indeed, analogies between orbicules and the respective ektexine are not restricted to few unrelated species but are, in fact, common in higher plants.