Heppia

Heppia is a genus of olive, brownish, gray, or blackish squamulose, crustose, or peltate lichens.[2] It is in the family Heppiaceae. It grows on rock or soil in arid sites around the world, in habitats similar to those favored by Peltula, which is similar but has a different cyanobacterium as the photobiont.[2] It lacks a medulla that is separate from the photobiont layer.[2] It is a cyanolichen with the photobiont cyanobacterium being Syctonema (or Syctonema-like).[2] The lower surface is paler than upper surface, and has numerous rhizoidal hyphae attaching it to the substrate.[2] The fruiting structures (ascomata) are apothecias immersed in the thallus with red to red-brown urn shaped (urceolate) to flat or slightly convex discs.[2] An exciple may or may not be present.[2]

Heppia
Heppia lutosa
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Lichinomycetes
Order:
Lichinales
Family:
Heppiaceae
Genus:
Heppia

Nägeli ex A.Massal. (1854)
Type species
Heppia adglutinata
(Kremp.) A.Massal. (1854)
Synonyms[1]
  • Heterina Nyl. (1858)
  • Endocarpiscum Nyl. (1864)
  • Guepinia Hepp (1864)
  • Guepinella Bagl. (1870)
  • Nylanderopsis Gyeln. (1935)
  • Pannariella (Vain.) Gyeln. (1935)
  • Heppiomyces Cif. & Tomas. (1953)
  • Placoheppia (Zahlbr.) Oxner (1956)

Species
  • Heppia adglutinata
  • Heppia arenacea
  • Heppia conchiloba
  • Heppia despreauxii
  • Heppia lutosa

References
  1. "Synonymy: Heppia Nägeli ex A. Massal". Species Fungorum. CAB International. Retrieved 2014-10-31.
  2. Lichen Flora of the Greater Sonoran Desert Region. Vol 1, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001,
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