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Haematomma persoonii

Scientific Name: Haematomma persoonii

Family: Haematommataceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Haematomma persoonii

Haematomma persoonii, also known as the Bloodspot lichen, is a fascinating lichen species with a global distribution. It has a complex taxonomic history, and its presence can be an indicator of specific environmental conditions.

Considerations for Pets

  • This lichen grows on bark of dead shrubs and trees.
  • It is also observed on man-made surfaces (Ginkgo biloba wood).

Taxonomy and Nomenclature

  • Scientific Name: Haematomma persoonii (Fe) A. Massal.
  • Family: Haematommataceae
  • Kingdom: Fungi
  • Class: Ascomycetes (sac fungi); also categorized under Lecanoromycetes
  • Synonyms: Lecanora persoonii Fe
  • Taxonomic Comments: Formerly classified in Weber (1966, 1986) and Elix &amp McCarthy (1998).

Distribution and Habitat

  • Haematomma persoonii has a broad distribution, including:
    • North America (e.g., North Carolina, Outer Banks, Nags Head Woods; central Texas, Enchanted Rock State Natural Area)
    • Taiwan
    • South and East Africa
    • Runion
    • Brazil
    • China
    • Costa Rica
    • New Caledonia
    • Mozambique
    • Oceania
  • It is often found on the bark of dead shrubs at the water's edge and on the bark of trees like Juglans nigra (Black Walnut) and Ginkgo biloba.

Morphological Characteristics

  • The thallus (lichen body) is whitish to greenish-grey.
  • It can appear even or warty.
  • The thallus is typically cracked and measures 0.3-0.5 mm in thickness.
  • Soredia and isidia (asexual reproductive structures) are absent.
  • Apothecia (fruiting bodies) are broad.

Quirky Facts

  • One of its common names is "Bloodspot lichen".

Genetic Information

  • Haematomma persoonii isolate AFTOL-ID 4914 has a partial cds sequence for RNA polymerase II largest subunit (RPB1) gene.
  • This sequence is 611 bp linear DNA (KJ766855.1 GI:667671317).

Interactions with Other Organisms

  • Lichenochora haematommatum is a species that grows on Haematomma persoonii.
  • Can grow together with the lichen *Hypoflavia crustosa* and the pyrenula *Pyrenula aurantiopileata*.

Further Information

  • Discover Life offers information about the biology, natural history, ecology, identification, and distribution of Haematomma persoonii.
  • The Greater Sonoran Desert Lichen Flora by Nash, T.H., Ryan, B.D., Gries, C., Bungartz, provides additional details.
  • MB#386643 is a reference number associated with this species.