''Usnea florida'' is a species of beard lichen in the family

Parmeliaceae The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2700 species in 71 genera, it is the largest family of lichen-forming fungi. The most speciose genera in the family are the well-known groups: '' Xanthoparmelia'' ( ...

. It was first described by

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his Nobility#Ennoblement, ennoblement in 1761 as Carl von Linné#Blunt, Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalise ...

in his 1753 work '' Species Plantarum''. German botanist

Friedrich Heinrich Wiggers Friedrich Heinrich Wiggers (15 March 1746 – 3 March 1811) was a German botanist who wrote a flora of Holstein in 1780. A number of variants of his name exist, including "Fridrich Hindrich" and the Latinisation "Fredericus Henricus" and the alter ...

transferred it to the genus ''

Usnea ''Usnea'' is a genus of mostly pale grayish-green fruticose lichens that grow like leafless mini-shrubs or tassels anchored on bark or twigs.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, The genus is in the f ...

'' in 1780. It is considered a

threatened Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensa ...

or vulnerable species in several European countries.

References

florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

Lichen species Lichens described in 1753 Lichens of Europe Taxa named by Carl Linnaeus {{Parmeliaceae-stub