Usnea is a genus of mostly pale grayish-green fruticose lichens that grow like leafless mini-shrubs or tassels anchored on bark or twigs.: 203  The genus...

Usnea scabrida is a foliose lichen that grows from holdfasts on trees. It occurs in southwest Western Australia. It is a very pale grayish-yellowish green...

Usnea filipendula, the fishbone beard lichen, is a pale gray-green fruticose lichen with a pendant growth form, growing in up to 20 cm many-branching...

Usnea strigosa, commonly known as bushy beard lichen, is a fruticose lichen in the family Parmeliaceae. Usnea strigosa has worldwide distribution. It...

Usnea hirta is a species of beard lichen in the family Parmeliaceae. It was one of 80 lichen species first formally described by Carl Linnaeus in his...

Usnea Ridge (60°42′S 45°38′W / 60.700°S 45.633°W / -60.700; -45.633) is a ridge at an elevation of 100–160 m, extending north-northwest from Jane Peak...

Dolichousnea longissima (syn. Usnea longissima), commonly known by the names old man's beard or Methuselah's beard lichen, is a fruticose lichen in the...

Usnea scabrata, the straw beard lichen, is a pale grayish-yellowish green, slender, pendant, branching from the base, unequally branching, shrubby fruticose...

Usnea galapagona is a species of beard lichen in the family Parmeliaceae. It is endemic to the Galápagos Islands. The lichen is easily recognized by its...

Usnea lambii is a small species of fruticose lichen in the family Parmeliaceae. It was first formally described as a new species in 1954 by Henry Imshaug...

Usnea is a species of beard lichen in the family Parmeliaceae. It was described as a new species in 1925 by Finnish lichenologist Edvard August Vainio...

Usnea florida is a species of beard lichen in the family Parmeliaceae. It was first described by Carl Linnaeus in his 1753 work Species Plantarum. German...

Usnea poliothrix is an irregular, orange species of Usnea, a common fruticose lichen. It has soralia with prominent isidiofibril growth. Its orange cortex...

Usnea leana is a species of fruticose lichen in the family Parmeliaceae. Found in the Galápagos Islands, it characterized by its pendulous thallus, branches...

Usnea mayrhoferi is a species of fruticose lichen in the family Parmeliaceae. It is found in the Galápagos Islands. Usnea mayrhoferi was first formally...

Usnea glabrata is a species of beard lichen in the family Parmeliaceae. It was first described as a variety of Usnea plicata by Erik Acharius. Finnish...

Usnea subcomplecta is a species of fruticose lichen in the family Parmeliaceae. It is found in the Galápagos Islands. It is characterized by its flaccid...

Usnea sphacelata is a species of saxicolous (rock-dwelling), fruticose lichen in the large family Parmeliaceae. It is found in both polar regions of Earth...

Usnea glabrescens is a species of beard lichen in the family Parmeliaceae. It grows on bark, has a shrubby thallus with a blackened base, and a thick...

Usnea trichodea, commonly known as bony beard lichen, is a pale straw-colored fruticose lichen with a pendant growth form. It grows on trees and is native...

Usnea fulvoreagens is a species of beard lichen in the family Parmeliaceae. It was first described by Finnish lichenologist Veli Räsänen in 1931 as a...

Usnea patriciana is a rare species of fruticose lichen in the family Parmeliaceae. It is endemic to the Galápagos Islands. This beard lichen has a shrubby...

Usnea Plug is a volcanic plug, 30 m from base to summit, rising to 117 m in the interior of Byers Peninsula, Livingston Island in the South Shetland Islands...

Usnea vainioi is a rare species of beard lichen in the family Parmeliaceae found in the southeastern United States. It was described as a new species...

Usnea pallidocarpa is a species of saxicolous (rock-dwelling) beard lichen in the family Parmeliaceae. It is known from Argentina. The lichen was formally...

Usnea articulata, commonly known as the string-of-sausage lichen, is a pale greenish-grey, densely branched lichen with a prostrate or pendant growth...

Usnea mutabilis is a grayish-yellowish pale green, unequally branching, shrubby (fruticose) 3–7 cm long lichen commonly anchored on holdfasts on trees...

involved. In most, the centre is hollow. However, lichens in the genus Usnea have a fairly elastic cord running through the middle. This is the most...

Usnea taylorii is a fruticose lichen in the family Parmeliaceae. Its predators include the land snail Notodiscus hookeri. Hooker, J.D. London J. Bot....

The lichen Usnea angulata, which uses hydrochory, is a weed in New Zealand....