Usnea ceratina forme fertile.

    This fertile form is found at the top of trees (Fagus, Quercus...) in oceanic woods and can only be found after their fall, it is always mixed with sterile forms. Central axis pink. C +/- very fleeting pale yellow, KC+/- pale yellow, CK+ bright golden yellow, P-, UV+ white.

N.B. Form very close to Usnea cristatula Motyka which would perhaps be the fertile form of Usnea ceratina.