''Lecanora'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
lichen
A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...
commonly called rim lichens.
[Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ][USDA Natural Resources Conservation Service Name Search]
/ref> Lichens in the genus '' Squamarina'' are also called rim lichens. Members of the genus have roughly circular fruiting discs (apothecia
An ascocarp, or ascoma (: ascomata), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. As ...
) with rims that have photosynthetic tissue similar to that of the nonfruiting part of the lichen body ( thallus).[ Other lichens with apothecia having margins made of thallus-like tissue are called lecanorine.][
It is in the family ]Lecanoraceae
The Lecanoraceae are a family of lichen
A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the c ...
in the suborder Lecanorineae.
Description
''Lecanora'' has a crustose thallus, photobiont, colourless ascospores and crystals in the amphothecium.
Swiss lichenologist Rosmarie Honegger used electron microscopy in the late 1970s to investigate ascus structure in several major groups of lichen-forming fungi. She defined the ''Lecanora''-type ascus as one characterized by several distinctive features: (1) a non- amyloid, clear ascus wall that is encased in an amyloid outer layer often described as a ; (2) an amyloid filled with inclusions set within a clear matrix; (3) a clear central layer inside the dome; and (4) a method of opening, or dehiscence, that is rostrate (resembling the shape of a bird's beak – the ascus has a pointed or protruding tip from which the spores are released).
Species
:A 2008 estimate placed over 550 species in the genus. As of July 2022, ''Index Fungorum
''Index Fungorum'' is an international project to index all formal names (scientific names) in the fungus kingdom. As of 2015, the project is based at the Royal Botanic Gardens, Kew, one of three partners along with Landcare Research and th ...
'' lists 245 species in the genus.
*'' Lecanora campestris'' (Schaer.) Hue 1888
*'' Lecanora conizaeoides'' Nyl. ex Cromb. 1885Mycobank: Lecanora conizaeoides
/ref>
*'' Lecanora gangaleoides'', Nyl. 1872
*'' Lecanora grantii'', H. Magn. 1932
*'' Lecanora helicopis'', (Wahlenb. ex Ach.) Ach. 1814
*'' Lecanora mellea'', W.A.Weber (1975)
*''Lecanora muralis
''Lecanora muralis'' ''(Protoparmeliopsis muralis)'' is a waxy-looking, pale yellowish-green crustose lichen, crustose lichen that usually grows in rosette (botany), rosettes radiating from a center (placoidiod, placodioid) filled with disc-like ...
'', (Schreb.) Rabenh. (1845)
*'' Lecanora poliophaea'', (Wahlenb.) Ach. 1810
*'' Lecanora rupicola'', (L.) Zahlbr. 1928
*'' Lecanora straminea'', Wahlenb. ex Ach.
*'' Lecanora strobilina'', (Spreng.) Kieff. 1895
*'' Lecanora usneicola'', Etayo, 2006
Gallery
Image:Lecanora_strobilina_(EU).jpg, '' Lecanora strobilina''
Image:Lichen_on_the_riverside.jpg, ''Lecanora'' cf. ''muralis'' lichen on the banks of the Bega canal in Timișoara
Image:Lecanora.Alan.JPG, ''Lecanora'' from coastal California
References
Lecanorales genera
Lichen genera
Taxa described in 1809
Taxa named by Erik Acharius
{{Lecanorales-stub