Resin duct in fossil Pine wood
Remains of a resin duct in Pinus wood from the Upper Miocene of Eschweiler (Germany)
Transverse section.
Magnification 100x
Resin duct in extant Pine wood Vertical resin duct in extant Pinus wood. The thinwalled cells on the inside of the resin duct have been disappeared.
Magnification 100 x