Xanthomendoza hasseana - Common Macrolichens of the Pacific Northwest

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Xanthomendoza hasseana

Overview
PNW Range:
West side	Occasional
East side	Uncommon
Immediate coast	Rare
Alpine or subalpine	None
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 - Habit

Habit
by B. McCune

1/3

Xanthomendoza hasseana - Spores

Spores
by B. McCune

2/3

Xanthomendoza hasseana - Lobes

Lobes
by B. McCune

3/3

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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