Found only in montane parts of south Kerry this unlikely member of the powder lichen tribe requires chemical analysis for certain identification. The thallus is remarkable for growing on exposed rain-lashed surfaces. The thallus is not powdery but consists of granules that are tightly bound to the substratum and, if spot tested, sometimes turn K+ yellowish.

Key characteristics

• The only truly granular powder lichen; K+ yellowish (but t.l.c. required for identification purposes)
• Grows in extreme environments, particularly on rain-beaten and frost-exposed montane rocks.

Original text submitted by Vince J. Giavarini