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Thamnolia vermicularis

PNW Range:
  West sideRare
  East sideRare
  Immediate coastNone
  Alpine or subalpineCommon
Habitat: Exposed subalpine to alpine ridges and peaks, occasionally at low elevations in open rocky sites.
Substrate: Moss and Selaginella mats, often on thin soil over rock.
Comments: Including Thamnolia subuliformis, which does not occur in the PNW; T. vermicularis is now recognized to include populations with two contrasting chemistries.
Synonymy: none
Thamnolia vermicularis - Habit
by B. McCune
Thamnolia vermicularis - P test
P test
by B. McCune
Thamnolia vermicularis - Habit
by B. McCune
Thamnolia vermicularis - Habit
by B. McCune
Thamnolia vermicularis - K test
K test
by B. McCune
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: Never
Stalks: Almost always
Squamules: Never
Single Holdfast: Sometimes
Dangling Nets: Never

Upper Surface
Upper Surface Color    (Dry) 
   Whitish: 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

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

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

Cortex K+ Yellow: Almost always
Medulla P+ Orange or Red: Almost always
Sexual Reproduction
Perithecia: Never
Apothecia: Never
   Mazaedium: Never
Disk Color    (Dry) 

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never