''Tasmidella'' is a

lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Ramalinaceae The Ramalinaceae are a family of lichenized fungi in the order Lecanorales. The family name is synonymous with the name ''Bacidiaceae''. Species of this family have a widespread distribution. Genera *''Aciculopsora'' *''Adelolecia'' *'' Arthro ...

Circumscribed In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius. Not every polyg ...

Gintaras Kantvilas Gintaras Kantvilas (born 1956) is an Australian lichenologist, who earned his Ph.D in 1985 from the University of Tasmania with a thesis entitled ''Studies on Tasmanian rainforest lichens''. He has authored over 432 species names, and 167 gener ...

Josef Hafellner Josef Hafellner (1951– ) is an Austrian mycologist and lichenologist. He was awarded the Acharius Medal in 2016 for his lifetime contributions to lichenology. Before his retirement, he was a professor at the Karl-Franzens-Universität in Graz ...

, and John A. Elix in 1999, it contains the single species ''Tasmidella variabilis'', found in

Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ...

. It is distinguished from the closely related genus '' Megalaria'' by having simple

spores In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, f ...

with a layered wall.

References

Lecanorales Lichen genera Monotypic Lecanorales genera Taxa named by Josef Hafellner Taxa named by Gintaras Kantvilas Taxa named by John Alan Elix Taxa described in 1999 {{Lecanorales-stub