From Plant Press, Vol. 19, No. 4, October 2016.
The lichens, Parmotrema stuppeum (left) and P. perlatum (right), were figures in Mason E. Hale’s How to Know the Lichens, Second Edition, published in 1979. The book was part of the Pictured Key Nature Series, a spiral bound field guide which could easily be carried as a travel reference. Alice Tangerini’s drawings, illustrated in the polycarbonate pencil technique on drafting film, were combined with graphite drawings by Jack Schroeder and line illustrations by Nancy Halliday, E. Menez, and others. Hale had instructed Tangerini to draw “exactly” what she was given by Hale with no reconstruction or repositioning of the lichen. Tangerini thought that the lichens resembled the eraser shreds from her gray Kneaded erasers so she doctored one with a little acrylic paint in white and black and carefully arranged it in a petri dish like the ones he had given her. He later picked up all of the dishes and told her they were refiled in the herbarium. The mistaken fake lichen was never mentioned so its whereabouts are unknown to this day.