Arising from seven distinct points of origin, as the xylem of the root of some plants.

Relating to, characterized by, or designating a vascular bundle having eight strands of xylem arising from eight distinct points of origin.

Of primary xylem or woody tissue: proceeding from few points of origin.

Having five points of xylem differentiation or protoxylem strands.

Of xylem or woody tissue: arising from several points of origin, having many strands of protoxylem.

Proceeding from four distinct points of origin: cf. diarch, adj.

Arising from three points of origin, as the woody tissue of a root: cf. diarch, adj.

having six rays, formed from six points of origin, as in some vascular bundles.