dcsimg

Diagnostic Description

provided by Mushroom Observer

Upper Surface: K-, not pruinose, paraplectenchymatous
Lower Surface: corticate, pale, prosoplectenchymatous, simple rhizines
Algae: green (trebouxioid)
Reproduction: soredia
Spores: physcioid (thick-walled, not Physconia-type)

license
cc-by-sa-3.0
copyright
Jason Hollinger
photographer
Jason Hollinger
original
visit source
partner site
Mushroom Observer

Distribution

provided by Mushroom Observer

Northern temperate.

license
cc-by-sa-3.0
copyright
Jason Hollinger
photographer
Jason Hollinger
original
visit source
partner site
Mushroom Observer

General Description

provided by Mushroom Observer

Common name: Shade or Cryptic Rosette Lichens
Family: Physciaceae

Small, narrow-lobed foliose lichens, typically whitish to grayish-brown.

license
cc-by-sa-3.0
copyright
Jason Hollinger
photographer
Jason Hollinger
original
visit source
partner site
Mushroom Observer

Habitat

provided by Mushroom Observer

Usually on bark or wood, occ. on rock, gen. in sheltered situations.

license
cc-by-sa-3.0
copyright
Jason Hollinger
photographer
Jason Hollinger
original
visit source
partner site
Mushroom Observer

Look Alikes

provided by Mushroom Observer

This genus can be hard to distinguish from others, particularly Phaeophyscia.

Phaeophyscia: lower cortex paraplectenchymatous and gen. dark (at least in center when old)
Physconia: pruinose, squarrose rhizines
Heterodermia and Physcia: cortex K+ yellow (atranorin)
Parmeliaceae: shiny at least near growing tips, typically much larger, spores totally different

license
cc-by-sa-3.0
copyright
Jason Hollinger
photographer
Jason Hollinger
original
visit source
partner site
Mushroom Observer

Physciella

provided by wikipedia EN

Physciella is a genus of lichen-forming fungi in the family Physciaceae. Circumscribed in 1986, it is distinguished from the similar genera Physcia and Phaeophyscia by its prosoplectenchymatous (comprising long narrow wavy parallel hyphae) lower cortex, the lack of the secondary metabolite atranorin in the upper cortex, and short, ellipsoid conidia.[1]

References

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN

Physciella: Brief Summary

provided by wikipedia EN

Physciella is a genus of lichen-forming fungi in the family Physciaceae. Circumscribed in 1986, it is distinguished from the similar genera Physcia and Phaeophyscia by its prosoplectenchymatous (comprising long narrow wavy parallel hyphae) lower cortex, the lack of the secondary metabolite atranorin in the upper cortex, and short, ellipsoid conidia.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN