Assertion: xylem's cell | /r/AtLocation | longitudinal section
Facets:
Source sentences:
text: All tracheid xylem strands, including the youngest ones (Plate V, 3), are surrounded by a narrow parenchyma of small polygonal cells (11–35 μm diameter) that is bounded by a prominent layer of small brown rectangular cells seen in longitudinal section (E in Plate V, 8).