Douglas Fir, Radial-Section

This is an image from a stained standard section of Pseudotsuga menziesii made by John P. Limbach of Ripon, Wisconsin. The tracheids may be uniseriate or opposite (parallel) biseriate. All of the tracheids show helical thickening.

Transmitted Brightfield Illumination

Definition/Function:

KINGDOM: Plantae DIVISION: Pinophyta CLASS: Pinopsida ORDER: Pinales FAMILY: Pinaceae GENUS: Pseudotsuga SPECIES: menziesii

Significance in the Environment:

Characteristic Features:

Associated Particles:

References:

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

http://en.wikipedia.org/wiki/Douglas-fir