Usnea strigosa, commonly known as bushy beard lichen, is a fruticose lichen in the family Parmeliaceae.
| Bushy beard lichen | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Usnea |
| Species: | U. strigosa
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| Binomial name | |
| Usnea strigosa | |
| Synonyms | |
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Distribution
editUsnea strigosa has worldwide distribution. It is a common tree lichen in Eastern and Southeastern North America.[1][2]
Description
editThis lichen is fruticose with 2 to 5 cm long branches and abundant terminal apothecia about 5 mm wide.[1]
Taxonomy
editUsnea strigosa has three recognized subspecies, major, rubiginea, and strigosa. There are also several chemotypes, bringing the current taxonomy into doubt.[1][3][4]
Ecology
editUsnea strigosa grows on trees. The most frequent hosts of this lichen are oak trees.[2] The photosynthetic symbionts of Usnea species are Chlorophyta green algae.
References
edit- ^ a b c "CNALH - Usnea strigosa". http://lichenportal.org/portal/taxa/index.php?taxauthid=1&taxon=54697&cl=1191 (accessed 10 Jan, 2015).
- ^ a b "Lichens USGA -- identification Guide -- Discover Life".http://www.discoverlife.org/mp/20q?guide=Lichens_USGA (accessed 10 Jan, 2015).
- ^ "ITIS Standard Report page - Usnea strigosa". https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=190835 (accessed 10 Jan, 2015).
- ^ "Strigose Beard Lichen (Usnea strigosa)". http://eol.org/pages/2858846/overview (accessed 10 Jan, 2015),
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