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Photographic gallery.  Thousands of particles under the microscope.
Celtus occidentalus, Hackberry Cross Section Under the Microscope

Celtus occidentalus, Cross-Section

This is an image from a stained standard section of Celtus occidentalus made by John P. Limbach of Ripon, Wisconsin. Notice the libriform fibers (see below).

Transmitted Off Circular Polarized Light Illumination


KINGDOM: Plantae UNRANKED: Angiosperms UNRANKED: Eudicots UNRANKED: Rosids ORDER: Rosales FAMILY: Ulmaceae GENUS: Celtis SPECIES: occidentalis

Significance in the Environment:

Characteristic Features:

Libriform fibers (thick walls with a very small lumen, minute, simple pitting) are common in Oak, Quercus species and in Celtis species. They also occur in Morus rubra.

Associated Particles:


Core, H.R., W.A. Cote, and A.C. Day, WOOD STRUCTURE AND IDENTIFICATION, Syracuse Wood Science Series, Vol. 6, 1979.