| Dirinaria applanata | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Caliciales |
| Family: | Caliciaceae |
| Genus: | Dirinaria |
| Species: | D. applanata |
| Binomial name | |
| Dirinaria applanata (Fée) D.D.Awasthi (1970) | |
| Synonyms [1] | |
Dirinaria applanata is a species of corticolous (bark-dwelling), foliose lichen in the family Caliciaceae. [2] It has a wide distribution in tropical and subtropical areas of the world.
The lichen was formally described as a new species, Parmelia applanata, by Antoine Laurent Apollinaire Fée in 1825. [3] Dharani Dhar Awasthi transferred it to the Dirinaria in 1970. [4]
Chemical analysis of Dirinaria applanata lead to the discovery of nine unique compounds. This includes a novel hopane derivative known as 1β-acetoxy-21α-hopane-3β,22-diol. Alongside this, researchers have identified six phenolic compounds: divaricatinic acid, methyl divaricatinate, methyl-β-orcinolcarboxylate, methyl haematommate, divarinol, and ramalinic acid A. Additionally, two xanthones, namely lichexanthone and 4,5-dichlorolichexanthone, were also isolated. [5]
A fungus newly described in 2023, Cylindromonium dirinariae , was reported as a lichenicolous fungus with Dirinaria applanata as its host. This nectrioid fungus forms a pinkish colony with mainly solitary phialides producing ellipsoid, aseptate conidia in mucoid packets. [6]