Tar

Tar

Observation - Tar. Description: A shiny black patch on willow leaves can usually mean only one thing, other than a nearby painter. There I was in the cold winds of the high, sub-Arctic tops of Hoy, when I spotted these leaf blemishes on the UK's smallest trees. Picture 2 shows the loca

A shiny black patch on willow leaves can usually mean only one thing, other than a nearby painter. There I was in the cold winds of the high, sub-Arctic tops of Hoy, when I spotted these leaf blemishes on the UK's smallest trees.
Picture 2 shows the location - North Atlantic tip of Hoy at 430m.
Picture 7 shows the Sycamore Tar Spot (for comparison) see http://www.ispotnature.org/node/439896