*Generic Reference Type Author Year Title Secondary Title Volume Pages Publisher Secondary Author Notes Keywords Abstract Accession Number Book Hedwig, I. 1784 Theoria generationis et fructificationis plantarum cryptogamarum Linnaei mere propriis observationibus er experimentis superstructa Petropolitae 166 pp. [+ 37 plates] 1 1 Short treatment on morphology of lichens as well. Plates of Lichen ciliaris (XXIII) and Lichen physodes (XXIV) included. 18768