sharing our knowledge.
Photographic gallery.  Thousands of particles under the microscope.
Quercus rubra, Red Oak Cross Section

Quercus rubra, Red Oak Cross Section

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

Transmitted Brightfield Illumination


KINGDOM: Plantae UNRANKED: Angiosperms UNRANKED: Eudicots UNRANKED: Rosids ORDER: Fagales FAMILY: Fagaceae GENUS: Quercus SECTION: Lobatae SPECIES: rubra

Significance in the Environment:

Characteristic Features:

Libriform fibers (thick walls with a very small lumen, minute, simple pitting) are common in Oak, Quercus species. Morus rubra and Celtis also have frequent libriform fibers. These structures only occure in hardwoods.

Associated Particles:


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