P142Ho, chert / silicified tuff from Streitwald, detail
Top view on chert surface, cortex imprint with Syringodendron
aspect: paired markings of conducting
strands in quincunx array, also lengthwise running narrow strands, direction
of trunk from below right
towards above left, coll. KRETZSCHMAR/Chemnitz, width
of picture ~ 11cm.