Xanthoria ucrainica

Xanthoria ucrainica

Observation - Xanthoria ucrainica - UK and Ireland. Description: K+ crimson. Thallus colour variable: lemon yellow, white, green (dry state), pale orange. Conidia ellipsoid, ±2.5µm. Can X. candelaria be ruled out without measuring the uncooperative blastidia?

K+ crimson. Thallus colour variable: lemon yellow, white, green (dry state), pale orange. Conidia ellipsoid, ±2.5µm. Can X. candelaria be ruled out without measuring the uncooperative blastidia?