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 ...
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).
Gener ...
. Found in the Solomon Islands, the lichen was first described as a new species in 2003 by Australian lichenologist Alan W. Archer. He named it ''Phaeographis salazinica'', with the
specific epithet
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
referring to the presence of the compound
salazinic acid
Salazinic acid is a depsidone with a lactone ring. It is found in some lichens, and is especially prevalent in ''Parmotrema'' and ''Bulbothrix'', where its presence or absence is often used to help classify species in those genera.
History
I ...
as its major
secondary compound
Secondary metabolites, also called specialised metabolites, toxins, secondary products, or natural products, are organic compounds produced by any lifeform, e.g. bacteria, fungi, animals, or plants, which are not directly involved in the norma ...
Santa Isabel Island
Santa Isabel Island (also known as Isabel, Ysabel and Mahaga) is the longest in Solomon Islands, the third largest in terms of surface area, and the largest in the group of islands in Isabel Province.
Location and geographic data
Choiseul lies t ...
). The main morphological characteristics of ''Phaeographis salazinica'' are the conspicuous
lirellae
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.ascospores (typically measuring 150–180
μm
The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...
long by 35–50 μm wide). Archer transferred the taxon to the genus '' Phaeographis'' in 2007.