Usnea longissima is found in Western Europe and North America. Taxon 53(4): 925-934. Nov 08, 1996. http://sweetgum.nybg.org/science/op/biblio_details.php?irn=480859, http://www.toyen.uio.no/botanisk/bot-mus/lav/factshts/usnelong.htm, http://www.lichen.com/bigpix/Ulongissima.html, https://en.wikipedia.org/w/index.php?title=Usnea_longissima&oldid=926063999, Articles with unsourced statements from March 2018, Taxonbars using multiple manual Wikidata items, Creative Commons Attribution-ShareAlike License, This page was last edited on 14 November 2019, at 01:04. Usnea longissima has also been named Dolichousnea longissima, but this is not the currently accepted name for this lichen. The genus is in the family Parmeliaceae. Usnea Identification There are many species of usnea, all characterized by a stretchy internal “filament” or stem. Usnea is a genus of mostly pale grayish-green fruticose lichens that grow like leafless mini- shrubs or tassels anchored on bark or twigs. , Usnea longissima is found in boreal forests and coastal woodland in Europe, Asia, and North America. , This lichen is fruticose, with very long stems and short, even side branches. (Parmeliaceae, lichenized Ascomycetes). Also known as Methuselah’s beard and old man’s beard, Usnea longissima is a lichen in the family Parmeliaceae (Kingdom Fungi). , The most frequent host of this lichen is spruce trees. Opuscula Philolichenum 17: 6-268. Esslinger, TL. Indonesia is a tropical country that is rich of various kinds of plants . It is a 'hanging hair' lichen, meaning its network of thin, hair-like branches drapes over and hangs from branches.  The stems are usually 15 to 30 cm in length but are sometimes much longer. Articus, K. (2004) Neuropogon and the phylogeny of Usnea s.l. INTRODUCTION . It is considered the longest lichen in the world. Click on image for larger version. In North America, it is found along the Pacific Coast from northern California to southern Alaska. Usnea pacificana > Click on Characteristic name for explanation. Usnea longissimais pale greenish or silvery-yellowish-green, fruticose and pendulous; main branches are cylindric, up to 3 meters or more in length and very rarely dividing, with numerous dense, short perpendicular side branches and fibrils of about equal length (3-40 mm). Usnea longissima. It grows all over the world. Identification Methuselah's beard is a large, easily recognizable species. One can take a strand of the yellowish-green to gray grey lichen and pull away at the outer coating (cortex) to reveal a whitish, elastic cord. Usnea longissima, old man's beard or Methuselah's beard lichen, is a lichen in the family Parmeliaceae. "Fact Sheet: Usnea longissima in Norway." . Common Macrolichens of the PNW Home Species List Identification Key Characteristics Color Chart Project Page About < Usnea lapponica. The outer cortex can get eroded, which subsequently exposes this white central cord. It is currently on threatened status. (2018) A Cumulative Checklist for the Lichen-Forming, Lichenicolous and Allied Fungi of the Continental United States and Canada, Version 22. It has a thicker, unbranched main strand that has a whitish central cord resembling an elastic band. identification, Usnea longissima, antibacterial. It grows on old trees, deciduous or coniferous, including on this nearly 100 year old pear in the Dosewallips river delta of western Washington [picture needed]. Usnea longissima, old man's beard or Methuselah's beard lichen, is a lichen in the family Parmeliaceae. Approximately 30,000 species of plants are very helpful and some of them had been used by the people as the medicine ingredients and had been consumed sustainably and hereditary for a long time based on the traditional experiences . Members of the genus are commonly called old man's beard, or beard lichen. The Plants Database includes the following 1 subspecies of Usnea longissima .Click below on a thumbnail map or name for subspecies profiles.