Strigose Beard Lichen on a locust tree in Howard Co., Maryland (6/24/2016).

View Record Details Photo by Richard Orr MBP List

Strigose Beard Lichen (<em>Usnea strigosa</em>) in Baltimore Co., Maryland (10/21/2011). Also known as Bushy Beard Lichen. (Photo ID: 1645 - Psn: 10)

Strigose Beard Lichen (Usnea strigosa) in Baltimore Co., Maryland (10/21/2011). Also known as Bushy Beard Lichen.

Photo by Richard Orr MBP List

Strigose Beard Lichen in Anne Arundel Co., Maryland (7/28/2014).

Photo by Jim Stasz MBP List

Strigose Beard Lichen growing in Calvert Co., Maryland (10/1/2018).

View Record Details Photo by Jim Stasz MBP List

Strigose Beard lichen in Worcester Co., Maryland (4/6/2013). Identified by Lance Biechele.

Photo by Jim Brighton MBP List

Strigose Beard Lichen in Worcester Co., Maryland (5/27/2015).

View Record Details Photo by Jim Stasz MBP List

Strigose Beard Lichen in St. Mary's Co., Maryland (7/26/2014).

View Record Details Photo by Jim Brighton MBP List

Strigose Beard Lichen in Anne Arundel Co., Maryland (4/10/2021). (c) Matthew Beziat, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 360599 - Psn: 35)

Strigose Beard Lichen in Anne Arundel Co., Maryland (4/10/2021). (c) Matthew Beziat, some rights reserved (CC BY-NC).

View Record Details Photo by Matthew Beziat MBP List

Strigose Beard Lichen in St. Mary's Co., Maryland (4/4/2018). Determined by Jim Stasz.

View Record Details Photo by Tyler Bell MBP List

Strigose Beard Lichen collected in Dorchester Co., Maryland (11/8/2015).

View Record Details Photo by Seth Metheny MBP List

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84 Records

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO

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Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Strigose Beard Lichen on a locust tree in Howard Co., Maryland (6/24/2016). View Record Details Media by Richard Orr.

Strigose Beard Lichen (Usnea strigosa) in Baltimore Co., Maryland (10/21/2011). Also known as Bushy Beard Lichen. Media by Richard Orr.

Strigose Beard Lichen in Anne Arundel Co., Maryland (7/28/2014). Media by Jim Stasz.

Strigose Beard Lichen growing in Calvert Co., Maryland (10/1/2018). View Record Details Media by Jim Stasz.

Strigose Beard lichen in Worcester Co., Maryland (4/6/2013). Identified by Lance Biechele. Media by Jim Brighton.

Strigose Beard Lichen in Worcester Co., Maryland (5/27/2015). View Record Details Media by Jim Stasz.

Strigose Beard Lichen in St. Mary's Co., Maryland (7/26/2014). View Record Details Media by Jim Brighton.

Strigose Beard Lichen in Anne Arundel Co., Maryland (4/10/2021). (c) Matthew Beziat, some rights reserved (CC BY-NC). View Record Details Media by Matthew Beziat.

Strigose Beard Lichen in St. Mary's Co., Maryland (4/4/2018). Determined by Jim Stasz. View Record Details Media by Tyler Bell.

Strigose Beard Lichen collected in Dorchester Co., Maryland (11/8/2015). View Record Details Media by Seth Metheny.

Source: Wikipedia

Bushy beard lichen

Conservation status
Secure (NatureServe)^[1]
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Lecanorales
Family:	Parmeliaceae
Genus:	Usnea
Species:	U. strigosa
Binomial name
*Usnea strigosa* (Ach.) Pers. (1827)
Synonyms
Usnea florida var. strigosa Ach. (1803)

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

Distribution

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Usnea strigosa has worldwide distribution. It is a common tree lichen in Eastern and Southeastern North America.^[2]^[3]

Description

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This lichen is fruticose with 2 to 5 cm long branches and abundant terminal apothecia about 5 mm wide.^[2]

Taxonomy

[edit]

Usnea strigosa has three recognized subspecies, major, rubiginea, and strigosa. There are also several chemotypes, bringing the current taxonomy into doubt.^[2]^[4]^[5]

Ecology

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Usnea strigosa grows on trees. The most frequent hosts of this lichen are oak trees.^[3] The photosynthetic symbionts of Usnea species are Chlorophyta green algae.

References

[edit]

^ NatureServe. "Usnea strigosa". NatureServe Explorer. Arlington, Virginia. Retrieved 12 November 2025.
^ ^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),

Taxon identifiers
Usnea strigosa	Wikidata: Q10711259 Wikispecies: Usnea strigosa EoL: 2858846 GBIF: 2606137 iNaturalist: 121176 ITIS: 190835 MycoBank: 355870 NatureServe: 2.121693 NCBI: 86621 Open Tree of Life: 753903 PLANTS: USST2

This Parmeliaceae-related article is a stub. You can help Wikipedia by adding missing information.

Strigose Beard Lichen

Usnea strigosa (Ach.) Eaton

Synonyms

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