Alectoria sarmentosa  >
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Alectoria imshaugii

Overview
PNW Range:
  West sideOccasional
  East sideCommon
  Immediate coastOccasional
  Alpine or subalpineRare
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
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