''Calicium abietinum'', commonly known as fir pin or black stubble, is a

crustose Crustose is a habit of some types of algae and lichens in which the organism grows tightly appressed to a substrate, forming a biological layer. ''Crustose'' adheres very closely to the substrates at all points. ''Crustose'' is found on rocks a ...

lichen that is found growing on

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are ...

s throughout much of the world. The species is found in North America from Mexico to Canada, England, Central Europe to Central Scandinavia, Asia, South America and in the

South West The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to ...

References

abietinum Lichen species Lichens described in 1797 Lichens of Australia Lichens of Asia Lichens of North America Lichens of Europe Lichens of South America Taxa named by Christiaan Hendrik Persoon {{Caliciales-stub