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

Overview
PNW Range:
  West sideOccasional
  East sideUncommon
  Immediate coastOccasional
  Alpine or subalpineUncommon
Habitat: Open often rocky habitats, valleys to montane, also in tundra and boreal forests northward
Substrate: On soil, humus, soil over rock, or rotten logs.
Comments:
Synonymy: none
Cladonia gracilis - Habit
Habit
by B. McCune
1/8
Cladonia gracilis - Podetia, split
Podetia, split
by B. McCune
2/8
Cladonia gracilis - Podetia, wall
Podetia, wall
by B. McCune
3/8
Cladonia gracilis - Podetia, tips
Podetia, tips
by B. McCune
4/8
Cladonia gracilis - Cups
Cups
by B. McCune
5/8
Cladonia gracilis - Habit
Habit
by R. Droker
6/8
Cladonia gracilis - Podetia
Podetia
by B. McCune
7/8
Cladonia gracilis - Habit
Habit
by B. McCune
8/8
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Almost always
Foliose: Never
Crustose: Never
Appressed Foliose: Never
Fluffy Foliose or Strappy: Never
Dangling Hair: Never
Erect Hair: Never
Appressed Hair: Never
Stalks With Squamules: Almost always
Stalks: Almost always
Squamules: Sometimes
Single Holdfast: Never
Dangling Nets: Never

Upper Surface
Upper Surface Color    (Dry) 
   Pale Gray Green: Almost always
   Pale Green: Almost always
   Olive Brown: Sometimes
   Olive Green: 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) 
   Whitish: Almost always
   Pale Gray: Sometimes
Veined Below: Never

Interior
Inside (Medulla) Yellow or Orange: Never
Central Cord: Never
Hollow Stalks or Hollow Lobes: Almost always
Gelatinous: Never

Photobiont
Green Algae Primary Photobiont: Almost always
Cyanobacteria Primary Photobiont: Never
Internal Cephalodia: Never
External Cephalodia: Never

Chemistry
Medulla P+ Orange or Red: Almost always
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

Cladonia Specific
Cup forming: Sometimes
Richly Branched: Never
Stalks With Melanotic Base: Never
Branch Axils Or Cups Open: Never
Copyright © 2019-2022 by Bruce McCune & Sunia Yang     Source for Habitat and Substrate: Macrolichens of the Pacific Northwest    Other Rights: Attribution-NonCommercial 4.0 International