1. The genus Helvetia in Alberta;Abbott;Mycotaxon,1988
2. The Helvellaceae: systematic revision and occurrence in northern and northwestern North America;Abbott;Mycotaxon,1997
3. Batsch, A.J.G.C. (1783). Elenchus fungorum. Conscripsit Avg. Jo. Georg. Car. Batsch, Phil. D. Accedunt icones LVII fungorum nonnullorum agri Jenensis, secundum naturam ab autore depictae; aeri incisae et vivis coloribus fucatae a I. S. Capieux. Halle an der Saale: JJ. Gebaver.
4. Flora von Hernstein in Niederösterreich und der weiteren umgebung;Beck,1884
5. On some new Fungi from Mexico;Berkeley;J. Linn. Soc, Bot.,1867