Chevallier,F F 1822: Essai sur les Hypoxylons Lichenoides, comprenant les genres Hysterium, Opegrapha, Polymorphum, Arthonia, Verrucaria, Pertusaria, etc. - \Delamétherie Journal de physique, de chimie, d'hist. nat. et des ArtsXCIV: 28-61. [Mattick Rec.# 33823]
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