Palm-ID

spheroid to slightly elongated (length / width < 3–4) cells (∅ < 150 µm) and compact [sometimes few and little lacunae in old stems

spherical (regularly isodiametric)

spheroid (regularly isodiametric with few lacunae)

cells slightly elongated (length / width < 3–4), lobed with a random (rhombohedral) shape (maximal length < 200 µm) and irregular meshwork (lacunae < 200 µm)

angular air-lacunae

meshwork of rhombohedral to lobed cells

meshwork of rhombohedral to lobed cells

meshwork of rhombohedral to lobed cells

meshwork of rhombohedral to lobed cells

rod-like cells (length > 200 µm; length / width > (3)–5) and more or less regular and large meshwork (lacunae > 250 µm)

long and parallel cells

rod-like cells (length > 200 µm, length / width > 3-5) AND regular and large meshwork (lacunae > 250 µm)

trabecular (= stellate) with a regular meshwork (spheroid lacunae > 250 µm)

a three-dimensional meshwork consisting of narrow, mostly uniseriate threads of parenchymatous cells, with abundant intercellular spaces betwenn them (like a net).

spheroid air-cavity

from C. Metcalfe. Cyperaceae. In C. Metcalfe, editor, Anatomy of the monocotyledons, volume 5, page 597, Oxford, 1971. Oxford University Press.

trabecular (=stellate) + air-cavity = spongious parenchyma

trabecular (= stellate) with a regular meshwork (lacunae > 250 µm)

huge cells (∅ > 150 µm) [potential few and irregular lacunae]

huge cells

appendicular parenchyma connecting fvb

In Mauritia-Type stems, a specific ground parenchyma may occur. This parenchyma appears to connect fvb of the central zone together.

appendicular parenchyma connecting fvb

Hierarchy

identification within "subfamily" or "tribe"
 |
 |_ ground parenchyma of the central cylinder

Belongs to the groups

• informative descriptor
• central cylinder
• ground parenchyma