lichen
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.fungi in the family
Graphidaceae
The Graphidaceae are a family of lichens in the order Ostropales.
Distribution and ecology
The vast majority of Graphidaceae species are restricted to the tropics. Most Graphidaceae species are epiphytic (i.e. they grow only on plants).
Gene ...
. It has nine species. The genus was
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 po ...
Mason Hale
Mason Ellsworth Hale, Jr. (September 23, 1929 – April 23, 1990) was one of the most prolific lichenologists of the 20th century. Many of his scholarly articles focused on the taxonomy of the family Parmeliaceae. Hale was one of the first lic ...
.
''Halegrapha'' species generally resemble those in the
script lichen A script lichen, or graphid lichen, is a member of a group of lichens which have spore producing structures that look like writing on the lichen body. The structures are elongated and narrow apothecia called lirellae, which look like short scribbles ...
genus ''
Graphis Graphis may refer to:
* ''Graphis'' (lichen), a genus in the family Graphidaceae
* ''Graphis'' (gastropod), a genus of sea snails in the family Cimidae
*Graphis Inc.
''Graphis, Inc.'' is an international publisher of books and awards for the ...
'', but are distinguished by having a
hymenium
The hymenium is the tissue layer on the hymenophore of a fungal fruiting body where the cells develop into basidia or asci, which produce spores. In some species all of the cells of the hymenium develop into basidia or asci, while in others some ...
Halegrapha intergrapha
''Halegrapha'' is a genus of lichen-forming fungi in the family Graphidaceae. It has nine species. The genus was circumscription (taxonomy), circumscribed in 2011 by Eimy Rivas Plata and Robert Lücking, with ''Halegrapha chimaera'' assigned as t ...