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Cetraria subalpina

Overview
PNW Range:
  West sideUncommon
  East sideRare
  Immediate coastNone
  Alpine or subalpineUncommon
Habitat: Typically in semi-open to open subalpine forests, rarely to middle elevations in the mountains, mostly not in true alpine areas.
Substrate: Most common on bases of ericaceous shrubs and other woody plants; occasionally on bases of conifers or spreading onto the ground.
Comments:
Synonymy: Tuckermannopsis subalpina, Nephromopsis subalpina
Cetraria subalpina - Lobes
Lobes
by B. McCune
1/3
Cetraria subalpina - Lobe tips
Lobe tips
by B. McCune
2/3
Cetraria subalpina - Pycnidia, marginal
Pycnidia, marginal
by B. McCune
3/3
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Never
Fluffy Foliose or Strappy: Almost always
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): 3 (± 0.6)

Upper Surface
Upper Surface Color    (Dry) 
   Olive Brown: Commonly
   Olive Green: Sometimes
   Brown: Almost always
   Tan: Almost always
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
Lower Surface (Foliose)
Lower Surface Color    (Dry) 
   Olive Brown: Almost always
   Olive Green: Almost always
   Brown: Almost always
   Tan: Almost always
Veined Below: Never
Rhizinate Below: Never
Tomentose Below: Never
Cyphellae: Never
Pseudocyphellae Below: Sometimes
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: Almost always
Cyanobacteria Primary Photobiont: Never
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