Pine Stem #6
by Dr Keith Wheeler/science Photo Library
Title
Pine Stem #6
Artist
Dr Keith Wheeler/science Photo Library
Medium
Photograph - Photograph
Description
Pine stem. Light micrograph of a section through a single annual growth ring in the stem of a pine (Pinus sp.) tree, showing large thin-walled tracheid cells (whitish pink) of younger spring wood and smaller thick-walled tracheid cells (bright white) of older autumn wood. The large circular lacuna (resin duct, centre) is lined with parenchyma cells (orange-brown). Magnification: x70 when printed 10 centimetres wide.
Uploaded
October 25th, 2019
Embed
Share