Cooke-Illustrations of British Fungi-Pl.859, Mordecai Cubitt Cooke, 1888
Illustrations of british fungi (hymenomycetes) vol vi, to serve as an atlas to the "handbook of british fungi". By mordecai cubitt cooke; published 1888 by williams and norgate in london. (english). Plate 859 fig. 1
cortinarius (hydrocybe) unimodus. Britzelmeyer. In grassy places. Carlisle. Sept. 1887. (according to index fungorum is c. Unimodus sensu cooke synonym to cortinarius casimiri). Date: 1888.