bicollateral

9.9

Having food-carrying tissue on both sides of water-carrying tissue in a plant stem

adjective
/ˌbaɪkəˈlætərəl/

Specialized

: bicollateral

A bicollateral bundle has phloem on both sides.

Examples

In some plant species, the stems contain bicollateral vascular bundles for efficient transport.
The anatomy of bicollateral bundles helps botanists distinguish certain plant families.
Researchers observed bicollateral arrangements in the vascular tissue under the microscope.
The bicollateral structure is fascinating!
In some plant species, the stems contain bicollateral vascular bundles for efficient transport.
The anatomy of bicollateral bundles helps botanists distinguish certain plant families.
Researchers observed bicollateral arrangements in the vascular tissue under the microscope.

Surface Forms

bicollateral positive

Morphology

bicollateral = collateral (semi-transparent) = bi + collateral

Formally transparent from 'bi-' (two) + 'collateral', but the botanical meaning is technical and may not be obvious to general learners.

Etymology

The word bicollateral comes from bi- meaning 'two' and collateral meaning 'at the side', like lateral which means 'side', so it literally says 'two-sided'; in plants it describes a vascular bundle with phloem on both sides of the xylem.