Solorina saccata, commonly called Chocolate chip lichen, is a lichen

Lichen

Lichens are composite organisms consisting of a symbiotic organism composed of a fungus with a photosynthetic partner , usually either a green alga or cyanobacterium...

 growing on calcareous rocks, usually in crevices and always in sheltered conditions. It is commonly found in Belgium

Belgium

Belgium , officially the Kingdom of Belgium, is a federal state in Western Europe. It is a founding member of the European Union and hosts the EU's headquarters, and those of several other major international organisations such as NATO.Belgium is also a member of, or affiliated to, many...

, Luxembourg

Luxembourg

Luxembourg , officially the Grand Duchy of Luxembourg , is a landlocked country in western Europe, bordered by Belgium, France, and Germany. It has two principal regions: the Oesling in the North as part of the Ardennes massif, and the Gutland in the south...

 and northern France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

.

History and taxonomy

It was found for the first time in Latvia in the Daugava valley near Staburags (A. Bruttan, 1870).

It belongs to the Solorina

Solorina

Solorina is a genus of 10 species of lichenized fungi in the family Peltigeraceae. The genus was first described by the Swedish botanist Erik Acharius in 1808.-Species:*Solorina aurantiaca*Solorina bispora*Solorina crocea...

genus and Peltigeraceae

Peltigeraceae

The Peltigeraceae are a lichenized family of fungi in the order Peltigerales. Species of this family have a widespread distribution but are especially prevalent in temperate regions. The family contains two genera and 101 species....

 family. It is also confused with Solorina simensis (Hochst. ex Flotow) in spore ornamentation and chemical properties as well as in its mainly plane apothecia and blue-green photobiont.