diarch


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Related to diarch: diarchy

diarch

(ˈdaɪɑːk)
adj
(Botany) botany (of a vascular bundle) having two strands of xylem
[C19: from Greek di-1 + archē beginning, origin]
References in periodicals archive ?
The roots were either diarch with two primary xylem strands or triarch with three primary xylem strands cleaving into two or three wide secondary xylem lobes.