Summary ²

Buellia disciformis (boreal button lichen) is a thin, bluish to pale gray rimose to areolate crustose lichen that grows on bark (rarely also on wood) in temperate forests in the northern USA and Europe, and at high altitudes in Arizona, down to 500 metres (1,600 ft) in coastal areas of California.:230 Flat apothecia with black discs are .2-.7 mm in diameter and sessile (neither raised or immersed in the thallus), with noticeable lecideine margins.:230 Lichen spot tests

Sources and Credits

1. no rights reserved, uploaded by Étienne Lacroix-Carignan
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Buellia_disciformis

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• CalPhotos
• Global Biodiversity Information Facility (GBIF)
• Mushroom Observer
• NatureServe Explorer 2.0
• SEINet Symbiota portals
• USDA PLANTS database
• Ways of Enlichenment

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