Evernia prunastri - Common Macrolichens of the Pacific Northwest

< Esslingeriana idahoensis

Fungi nonlichenized >

Click on Characteristic name for explanation. Click on image for larger version.

Evernia prunastri

Overview
PNW Range:
West side	Abundant
East side	Occasional
Immediate coast	Common
Alpine or subalpine	None
Habitat:	Ubiquitous in most habitats at low elevations west Cascades, especially hardwood forests, savannas, and in urban and agricultural areas; less abundant in lower mountain forests where it is best developed in pockets of hardwoods; east Cascades almost entirely restricted to riparian forests and shrubby areas.
Substrate:	Wood or bark, especially hardwood trees and shrubs, occasionally on conifers.
Comments:
Synonymy:	none

Evernia prunastri - Habit

Habit
by R. Droker

1/3

Evernia prunastri - Habit

Habit
by B. McCune

2/3

Evernia prunastri - Habit

Habit
by R. Droker

3/3

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Scale: Bar=1mm unless noted

Growth Form
Fruticose:	Almost always
Foliose:	Almost always
Crustose:	Never
Appressed Foliose:	Never
Fluffy Foliose or Strappy:	Almost always
Dangling Hair:	Rarely
Erect Hair:	Rarely
Appressed Hair:	Never
Stalks With Squamules:	Never
Stalks:	Never
Squamules:	Never
Single Holdfast:	Almost always
Dangling Nets:	Never
Lobe Width (mm):	5 (± 2)

Upper Surface
Upper Surface Color (Dry)
Pale Gray Green:	Almost always
Pale Yellow Green:	Almost always
Pale Green:	Almost always
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 Green:	Sometimes
Pale Yellow Green:	Sometimes
Pale Green:	Sometimes
Whitish:	Commonly
Pale Gray:	Sometimes
Veined Below:	Never
Rhizinate Below:	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
Usnic Acid:	Almost always
Cortex K+ Yellow:	Almost always
Cortex KC+ Yellow:	Almost always
Medulla UV+ Blue White:	Almost always

Sexual Reproduction
Perithecia:	Never
Apothecia:	Never
Mazaedium:	Never
Disk Color (Dry)
Disk Brown or Tan:	Almost always

Asexual Reproduction
Isidia:	Never
Soredia:	Almost always
Lobules:	Never