vascular bundle

American  

noun

Botany.

1. a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid-conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of plant.

---

vascular bundle British  

noun

1. a longitudinal strand of vascular tissue in the stems and leaves of higher plants

---

vascular bundle Scientific  

1. A strand of primary tissues found within the stem of a plant and consisting of xylem and phloem, along with cambium. The vascular bundles develop from the procambium of the growing stem. In the monocotyledons, vascular bundles are found in complex arrangements dispersed throughout the stem. In eudicotyledons, they are arranged in a ring, with the xylem of each bundle on the inside and the phloem on the outside.

2. Also called fibrovascular bundle

3. See also fascicular cambium interfascicular cambium

---

Etymology

Origin of vascular bundle

First recorded in 1880–85

Example Sentences

The xylem tissue is located toward the interior of the vascular bundle, and phloem is located toward the exterior.

From Textbooks • Jun. 9, 2022

Each teardrop-shaped vascular bundle consists of large xylem vessels toward the inside and smaller phloem cells toward the outside.

From Textbooks • Jun. 9, 2022

The inner part of the vascular bundle is xylem tissue, and the outer part is sclerenchyma tissue.

From Textbooks • Jan. 1, 2015

The scanning electron micrograph shows an oval vascular bundle.

From Textbooks • Jan. 1, 2015

Every large primary vascular bundle in the leaves of many grasses possesses sclerenchymatous bands both above and below.

From A Handbook of Some South Indian Grasses by Rangachari, K.