Vascular-bundle sentence example

vascular-bundle
  • 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.
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  • 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.
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  • The single vascular bundle supplies a branch to the base of each sporangium.
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  • Each sporangiophore is traversed throughout its length by a vascular bundle connected with that which supplies the subtending bract.
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  • 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.
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  • The single vascular bundle which traversed the petiole and its branches was concentric, the leaves resembling those of Ferns in structure as well as in habit.
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