Primary

• Ach., Meth. Lich. : 123 (1803).

• Acharius, E. (1803) Methodus qua omnes detectos lichenes secundum organa carpomorpha ad genera, species et varietates redigere atque observationibus illustrare tentavit Erik Acharius (Methodus Lichenum). Cum tab. aen. Stockholm.   **[Mattick Rec.# 30921] - (Recent Literature on Lichens - Mattick No.)** (PDF file)

Secondary

• Breuss, O. (2007) Verrucaria (pp. 335-377). In: Nash III, T.H., Gries, C., and Bungartz, F. (eds.), Lichen Flora of the Greater Sonoran Desert Region, Vol. 3. Lichens Unlimited, Arizona State University, Tempe, Arizona, 567 pages.   **[RLL List # 210 / Rec.# 29882] - (Recent Literature on Lichens)** (V. acrotella: p. 340; drawing of perithecium: p. 360)

• Thomson, J.W. (1997) Verrucaria (pp. 629-645). In, American Arctic Lichens: 2. The Microlichens. The University of Wisconsin Press, 675 pages.   **[RLL List # 170 / Rec.# 18517] - (Recent Literature on Lichens)** (Description & map of V. acrotella: p. 631)

Links

• USDA Plants Database

• North American Lichen Checklist (May 2008)

• Index Fungorum

• MycoBank