Heppia

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)

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]

Species

References

  1. ↑ "Synonymy: Heppia Nägeli ex A. Massal.". Species Fungorum. CAB International. Retrieved 2014-10-31.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Lichen Flora of the Greater Sonoran Desert Region. Vol 1, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001,

External links