Common Macrolichens of the PNW Home Species List Identification Key Characteristics Color Chart Project Page About
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Peltigera rufescens

Overview
PNW Range:
  West sideUncommon
  East sideCommon
  Immediate coastRare
  Alpine or subalpineOccasional
Habitat: Widespread, throughout the PNW but most common east Cascades.
Substrate: Soil, mosses, and decaying organic matter.
Comments:
Synonymy: none
Peltigera rufescens - Habit
Habit
by B. McCune
1/5
Peltigera rufescens - Lower
Lower
by B. McCune
2/5
Peltigera rufescens - Habit
Habit
by B. McCune
3/5
Peltigera rufescens - Upper surface
Upper surface
by B. McCune
4/5
Peltigera rufescens - Rhizines
Rhizines
by B. McCune
5/5
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Sometimes
Fluffy Foliose or Strappy: Sometimes
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): 10 (± 5)

Upper Surface
Upper Surface Color    (Dry) 
   Whitish: Rarely
   Pale Gray: Almost always
   Dark Gray: Almost always
   Brown: Sometimes
   Tan: Almost always
Upper Surface Tomentose: Almost always
Upper Surface Pruinose or Scabrid: Rarely
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) 
   Whitish: Almost always
   Pale Gray: Sometimes
   Dark Gray: Almost always
   Black: Almost always
   Brown: Commonly
   Tan: Commonly
Veined Below: Almost always
Rhizinate Below: Almost always
   Rhizines Squarrose: Sometimes
Tomentose Below: Sometimes
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: Never
Cyanobacteria Primary Photobiont: Almost always
Internal Cephalodia: Never
External Cephalodia: Never

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

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never
Copyright © 2019-2024 by Bruce McCune & Sunia Yang     Source for Habitat and Substrate: Macrolichens of the Pacific Northwest    Other Rights: Attribution-NonCommercial 4.0 International