Phylum Ascomycota

Kingdom: Fungi > Phylum: Ascomycota

The ascomycetes are the sac fungi, so named because of the reproductive spores contained in a special sac called ascus during the sexual stage.  Many of the ascomycetes live on dead organic matter and many are plant pathogens, some are animal pathogens and a few are edible mushrooms, examples of the latter being the truffle and the morel.   Possibly one of the most useful fungi of all is Saccharomyces cerevisiae, the common yeast used in bread making and brewing. 

The ascomycetes can be divided into the following classes:

  1. Class: Arthoniomycetes –  forms lichens
  2. Class: Archaeorhizomycetes
  3. Class: Coniocybomycetes
  4. Class: Dothideomycetes  – pathogenic, endophytic, or epiphytic on plants, saprotrophic in soil, parasitic on fungi and animals, or symbiotic with algae to form lichens
  5. Class: Eurotiomycetes  –  parasitic, pathogenic, saprotrophic, or symbiotic with algae to form lichens (included here are Penecillium and Aspergillus some of which produce antibiotics)
  6. Class: Geoglossomycetes  – Earth tongues (used to be included in Leotiomycetes)
  7. Class: Laboulbeniomycetes  –  very tiny, external parasites of insects
  8. Class: Lecanoromycetes  –  all lichen forming fungi
  9. Class: Leotiomycetes  –  parasitic or pathogenic on plants, many cause serious plant diseases (includes mildews), some grow on dung
  10. Class: Lichinomycetes –  forms lichens
  11. Class: Neolectomycetes –  parasitic or pathogenic on plant roots
  12. Class: Orbiliomycetes –  Parasitic or saprotrophic, with many found on bark; includes some cup fungi
  13. Class: Pezizomycetes  –  saprotrophic on wood, soil, or dung, includes cup fungi, morels, truffles and elfin saddles
  14. Class: Pneumocystidomycetes – parasitic or pathogenic in animals (can be parasitic in the alveoli of the lungs of some vertebrates  eg Pneumocystis)
  15. Class Schizosaccharomycetes – fission yeasts – saprotrophic in fruit juice
  16. Class: Saccharomycetes  – Budding yeasts including baker’s yeast – aprotrophic or pathogenic in plants and humans (eg Saccharomyces used for fermentation and Candida which can cause thrush)
  17. Class: Sordariomycetes  –  from the Latin ‘sordes’ meaning filth as many grow on animal faeces, but growth habits are quite varied. Includes leaf spots, blights, and Claviceps (ergot)
  18. Class: Taphrinomycetes –  parasitic or pathogenic on plants resulting in galls
  19. Class: Xylonomycetes


The fungi I have photos of are further classified below.  Identifying fungi is difficult so many of the species I have found have only been confidently identified at the Genus level. 


Class: Lecanoromycetes (Lichens)

  • Order: Lecanorales
    • Family: Cladoniaceae
      • Genus: Cladonia
        • C. crispata (aka C. rangiformis)
        • C. portentosa, Reindeer lichen
        • C. floerkeana, Devil’s matchsticks (aka British soldiers lichen)
        • C. pyxidata, Pebbled pixie-cup
    • Family: Parmeliaceae
      • Genus: Flavoparmelia
        • F. caperata, Common Greenshield Lichen
      • Genus: Evernia
        • E. prunastri, Oak moss lichen
      • Genus: Hypogymnia
        • H. physodes, Hooded tube lichen
  • Order: Teloschistales
    • Family: Teloschistaceae
      • Genus: Xanthoria
        • X. parietina, common orange lichen (aka yellow scale, maritime sunburst lichen, shore lichen)
  • Order: Peltigerales
    • Family: Peltigeraceae
      • Genus: Peltigera
        • P. canina, Dog’s Tooth lichens


Class: Leotiomycetes

  • Order: Helotiales
    • Family: Gelatinodiscaceae
      • Genus: Ascocoryne
        • A. sarcoides, purple jellydisk
  • Order: Rhytismatales
    • Family: Pezizellaceae
      • Genus: Bisporella
        • B. citrina, lemon disco


Class: Pezizomycetes

  • Order: Pezizales
    • Family: Helvellaceae
      • Genus: Helvella
        • H. crispa, White saddle (Note. this now appears to have been renamed to Pseudocraterellus undulatus and moved to the family Cantharellaceae in the phylum Basidiomycota)
    • Family: Pyronemataceae
      • Genus: Aleuria
        • A. aurantia, Orange peel fungus
      • Genus: Geopora
        • G. tenuis (no English name)
      • Genus: Otidea
        • O. onotica, Hare’s ear
      • Genus: Scutellinia
        • S. scutellata, Common eyelash
    • Family: Sarcoscyphaceae
      • Genus: Sarcoscypha (these two species are almost identical)
        • S. austriaca, Scarlet elfcup
        • S. coccinea,  Ruby elfcup


Class: Sordariomycetes

  • Order: Hypocreales
    • Family: Clavicipitaceae
      • Genus: Claviceps
        • C. purpurea, Ergot
  • Order: Xylariales
    • Family: Xylariaceae
      • Genus: Xylaria
        • X. hypoxylon, Candlesnuff
        • X. longipes, Dead moll’s fingers