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Umbilicaria havaasii

Overview
PNW Range:
  West sideOccasional
  East sideRare
  Immediate coastUncommon
  Alpine or subalpineOccasional
Habitat: Outcrops and talus, often on steep rock faces, montane to alpine, most frequent in areas with oceanic to suboceanic climate.
Substrate: Rock (noncalcareous).
Comments:
Synonymy: none
Umbilicaria havaasii - Habit
Habit
by B. McCune
1/6
Umbilicaria havaasii - Lower
Lower
by B. McCune
2/6
Umbilicaria havaasii - Upper
Upper
by B. McCune
3/6
Umbilicaria havaasii - Rhizines on upper surface
Rhizines on upper surface
by B. McCune
4/6
Umbilicaria havaasii - Upper
Upper
by B. McCune
5/6
Umbilicaria havaasii - Field habit
Field habit
by B. McCune
6/6
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Sometimes
Fluffy Foliose or Strappy: Sometimes
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) 
   Pale Gray: Almost always
   Dark Gray: Almost always
   Black: Sometimes
   Brown: Almost always
Upper Surface Tomentose: Never
Upper Surface Pruinose or Scabrid: Almost always
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: Almost always
   Dark Gray: Almost always
   Black: Commonly
   Brown: Almost always
   Tan: Almost always
Veined Below: Never
Rhizinate Below: Sometimes
Tomentose Below: Never
Cyphellae: Never
Pseudocyphellae Below: Never
Papillae Below: Never

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: Sometimes
   Mazaedium: Never
Disk Color    (Dry) 
   Disk Black: Almost always

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never