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Umbilicaria phaea

Overview
PNW Range:
  West sideCommon
  East sideCommon
  Immediate coastRare
  Alpine or subalpineCommon
Habitat: Exposed to somewhat shaded rock outcrops and talus, common at low to mid elevations, less frequent at high elevations.
Substrate: Rock (noncalcareous).
Comments:
Synonymy: none
Umbilicaria phaea - Lower
Lower
by B. McCune
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Umbilicaria phaea - Apothecia
Apothecia
by B. McCune
2/8
Umbilicaria phaea - Upper surface
Upper surface
by B. McCune
3/8
Umbilicaria phaea - Apothecia
Apothecia
by B. McCune
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Umbilicaria phaea - Habit
Habit
by B. McCune
5/8
Umbilicaria phaea - Spores
Spores
by B. McCune
6/8
Umbilicaria phaea - Lower
Lower
by B. McCune
7/8
Umbilicaria phaea - Lower
Lower
by B. McCune
8/8
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Almost always
Fluffy Foliose or Strappy: Never
Dangling Hair: Never
Erect Hair: Never
Appressed Hair: Never
Stalks With Squamules: Never
Stalks: Never
Squamules: Never
Single Holdfast: Almost always
Dangling Nets: Never
Lobe Width (mm): 15 (± 7)

Upper Surface
Upper Surface Color    (Dry) 
   Brown: Almost always
   Tan: Sometimes
Upper Surface Tomentose: Never
Upper Surface Pruinose or Scabrid: Never
Upper Surface with Network of Ridges: Sometimes
Upper Surface with Pseudocyphellae: Never
   Upper Surface with Holes into Cavity: Never
Cilia on Margins: Never
Lower Surface (Foliose)
Lower Surface Color    (Dry) 
   Pale Gray: Sometimes
   Dark Gray: Sometimes
   Black: Sometimes
   Brown: Almost always
   Tan: Sometimes
Veined Below: Never
Rhizinate Below: Rarely
   Rhizines Squarrose: Never
Tomentose Below: Never
Cyphellae: Never
Pseudocyphellae Below: Never
Papillae Below: Almost always

Interior
Inside (Medulla) Yellow or Orange: Never
Central Cord: Never
Hollow Stalks or Hollow Lobes: Never
Gelatinous: Never

Photobiont
Green Algae Primary Photobiont: Almost always
Cyanobacteria Primary Photobiont: Never
Internal Cephalodia: Never
External Cephalodia: Never

Chemistry
Medulla C+ Orange, Red, or Pink: Almost always
Medulla KC+ Orange, Red, or Pink: Almost always
Medulla UV+ Blue White: Rarely
Sexual Reproduction
Perithecia: Never
Apothecia: Commonly
   Mazaedium: Never
Disk Color    (Dry) 
   Disk Black: Almost always

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never