<  Xanthomendoza fulva
Xanthomendoza mendozae  >
Click on Characteristic name for explanation. Click on image for larger version.
Xanthomendoza hasseana

Overview
PNW Range:
  West sideOccasional
  East sideUncommon
  Immediate coastRare
  Alpine or subalpineNone
Habitat: Semi-open to open, nutrient-rich habitats.
Substrate: On bark (esp. Populus, Quercus, and other hardwoods), occasionally on wood or rock.
Comments:
Synonymy: Xanthoria hasseana
Xanthomendoza hasseana - Spores
Spores
by B. McCune
1/3
Xanthomendoza hasseana - Lobes
Lobes
by B. McCune
2/3
Xanthomendoza hasseana - Habit
Habit
by B. McCune
3/3
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Almost always
Fluffy Foliose or Strappy: Rarely
Dangling Hair: Never
Erect Hair: Never
Appressed Hair: Never
Stalks With Squamules: Never
Stalks: Never
Squamules: Never
Single Holdfast: Never
Dangling Nets: Never
Lobe Width (mm): 0.5 (± 0.25)

Upper Surface
Upper Surface Color    (Dry) 
   Pale Green: Rarely
   Dark Green: Rarely
   Orange: Almost always
   Yellow: Almost always
Upper Surface Tomentose: Never
Upper Surface Pruinose or Scabrid: Never
Upper Surface with Network of Ridges: Never
Upper Surface with Pseudocyphellae: Never
   Upper Surface with Holes into Cavity: Never
Cilia on Margins: Never
Lower Surface (Foliose)
Lower Surface Color    (Dry) 
   Orange: Almost always
   Yellow: Almost always
   Whitish: Almost always
Veined Below: Never
Rhizinate Below: Almost always
   Rhizines Squarrose: Never
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
Cortex K+ Purple or Red: Almost always
Sexual Reproduction
Perithecia: Never
Apothecia: Commonly
   Mazaedium: Never
Disk Color    (Dry) 
   Disk Orange: Almost always
   Disk Yellow: Rarely

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never