Acarospora alba, Knudsen 13181 Isotype A chasmolithic thallus and young apotecia B apothecia one per areole with thin white margin (Holotype). Scale bars: 500 μm (A, B).

 
 
  Part of: Knudsen K, Cho-Ah-Ying J, Kocourková J, Hodková E, Malíček J, Wang Y (2025) The diversity of Acarosporaceae (Acarosporales, Lecanoromycetes) in California. MycoKeys 112: 183-210. https://doi.org/10.3897/mycokeys.112.138580