Leaf cross section under microscope — Cross-section of the collenchyma tissue

Observation Notes

This cross section was prepared using a RapidTome at roughly 10μm thickness and left unstained.

Key Structures

Epidermis — single layer of tightly packed cells with a waxy cuticle.
Parenchyma — ground tissues surrounding the collenchyma characterized by their thin primary cell walls. This is the most common tissue type in seed plants.
Collenchyma — structural tissues characterized by having only primary cell walls. These cell walls are unevenly thickened, differentiating the collenchyma into different types. This is the least common tissue type in seed plants.

Source

— Crang, R. F. E., Lyons-Sobaski, S., & Wise, R. R. (2018). Plant anatomy : a concept-based approach to the structure of seed plants. Springer.

Celery Collenchyma Cross Section

Feb 25, 2026

This is a view of the collenchyma, the least common cell type found in plants. Collenchyma is both mechanically supportive and flexible, which allows celery stalks to continue growing and expanding without constriction. This image shows angular collenchyma, which can be identified by the thickening at the corners where the cells meet. The thickening is most noticable in the upper left region of the collenchyma tissue.

Stem Cross Sections

Plant Biology

Cross-section of the collenchyma tissue

Observation Notes

This cross section was prepared using a RapidTome at roughly 10μm thickness and left unstained.

Key Structures

Epidermis — single layer of tightly packed cells with a waxy cuticle.
Parenchyma — ground tissues surrounding the collenchyma characterized by their thin primary cell walls. This is the most common tissue type in seed plants.
Collenchyma — structural tissues characterized by having only primary cell walls. These cell walls are unevenly thickened, differentiating the collenchyma into different types. This is the least common tissue type in seed plants.

Source

— Crang, R. F. E., Lyons-Sobaski, S., & Wise, R. R. (2018). Plant anatomy : a concept-based approach to the structure of seed plants. Springer.