Search results
Results from the WOW.Com Content Network
Although there are many lichen species throughout the world, only a few species of lichen are known to be both edible and provide any nutrition. [6] Two problems often encountered with eating lichens is that they usually contain mildly toxic secondary compounds, and that lichen polysaccharides are generally indigestible to humans. Many human ...
Lichens grow by vegetatively breaking off a piece, which may or may not be defined as the "same" lichen, and two lichens can merge, then becoming the "same" lichen. [64] One specimen of Rhizocarpon geographicum on East Baffin Island has an estimated age of 9500 years.
Usnea is a genus of fruticose lichens in the large family Parmeliaceae. The genus, which currently contains roughly 130 species, was established by Michel Adanson in 1763. Species in the genus grow like leafless mini-shrubs or tassels anchored on bark or twigs. Members of the genus are commonly called old man's beard, beard lichen, or beard moss.
Ramalina usnea is a species of corticolous (bark-dwelling), fruticose lichen in the family Ramalinaceae. [4] It grows on tree bark across the Americas and parts of East Africa. Growing up to 30 cm (12 in) long, it forms pale greenish-grey branching strands that darken when dry.
Pages in category "Lichens and humans" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. E. Edible lichen;
Letharia vulpina, commonly known as the wolf lichen (although the species name vulpina, from vulpine relates to the fox), is a fruticose lichenized species of fungus in the family Parmeliaceae. It is bright yellow-green, shrubby and highly branched, and grows on the bark of living and dead conifers in parts of western and continental Europe and ...
Growing on a conifer in the hills north of Mount St. Helens, showing the leaf-like side-branches and pendent "stems", some of them several metres long. Dolichousnea longissima (syn. Usnea longissima), [2] [3] commonly known by the names old man's beard or Methuselah's beard lichen, is a fruticose lichen in the family Parmeliaceae.
Saxicolous lichens are those which grow on stone. [111] Lichens can be classified by the substrate on which they grow: Bryophilous lichen – on mosses or liverworts. [111] Hepaticolous lichen – on liverworts. [112] Muscicolous lichen – on mosses. [113] Corticolous lichen – on bark. [111] Ramicolous lichen – on twigs. [113]