A unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem
(Noun)
Synonyms:
vascular strand
fibrovascular bundle
Vascular-bundle Sentence Examples
In Sciadopitys similar spurs occur, each bearing a single needle, which in its grooved surface and in the possession of a double vascular bundle bears traces of an origin from two needle-leaves.
The vascular bundle entering the stern from a leaf with a single vein passes by a more or less direct course into the central cylinder of the stem, and does not assume the girdle-like form characteristic of the cycadean leaf-trace.
The single vascular bundle supplies a branch to the base of each sporangium.
Each sporangiophore is traversed throughout its length by a vascular bundle connected with that which supplies the subtending bract.
The latter shows marked xerophytic adaptations; the single vascular bundle was surrounded by a sheath of short tracheides, and the stomata were sheltered in two deep furrows of the lower surface.