Alectoria imshaugii - Common Macrolichens of the Pacific Northwest

Alectoria sarmentosa >

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

Alectoria imshaugii

Overview
PNW Range:
West side	Occasional
East side	Common
Immediate coast	Occasional
Alpine or subalpine	Rare
Habitat:	Common in moist low to mid elevation forests east Cascades, but only occasional west Cascades.
Substrate:	Bark and wood of both conifers and hardwoods.
Comments:	Looks like an Usnea but lacks central cord.
Synonymy:	none

Alectoria imshaugii - Isidia

Isidia
by B. McCune

1/3

Alectoria imshaugii - Branches

Branches
by B. McCune

2/3

Alectoria imshaugii - Base

Base
by B. McCune

3/3

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Scale: Bar=1mm unless noted

Growth Form
Fruticose:	Almost always
Foliose:	Never
Crustose:	Never
Appressed Foliose:	Never
Fluffy Foliose or Strappy:	Never
Dangling Hair:	Sometimes
Erect Hair:	Almost always
Appressed Hair:	Never
Stalks With Squamules:	Never
Stalks:	Never
Squamules:	Never
Single Holdfast:	Almost always
Dangling Nets:	Never

Upper Surface
Upper Surface Color (Dry)
Pale Yellow Green:	Almost always
Pale Green:	Almost always
Black:	Rarely
Olive Black:	Rarely
Upper Surface Tomentose:	Never
Upper Surface Pruinose or Scabrid:	Never
Upper Surface with Network of Ridges:	Never
Upper Surface with Pseudocyphellae:	Almost always
Upper Surface with Holes into Cavity:	Never
Cilia on Margins:	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 KC+ Yellow:	Almost always
Medulla P+ Orange or Red:	Sometimes
Medulla P+ Yellow:	Sometimes
Medulla K+ Orange or Red:	Sometimes
Medulla K+ Yellow:	Sometimes
Medulla KC+ Orange, Red, or Pink:	Rarely
Medulla UV+ Blue White:	Sometimes

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

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