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Cetraria pinastri

PNW Range:
  West sideUncommon
  East sideOccasional
  Immediate coastNone
  Alpine or subalpineCommon
Habitat: Mountain forests, generally at medium to high elevations, often in cold sites and more tolerant of snow burial than other epiphytic Cetraria-like species.
Substrate: Tree bases, shrubs, and dead wood.
Synonymy: Vulpicida pinastri
Cetraria pinastri - Soralia
by B. McCune
Cetraria pinastri - Habit
by B. McCune
Cetraria pinastri - Habit
by B. McCune
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): 5 (± 2.5)

Upper Surface
Upper Surface Color    (Dry) 
   Pale Yellow Green: Rarely
   Yellow: 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) 
   Yellow: Almost always
Veined Below: Never
Rhizinate Below: Sometimes
   Rhizines Squarrose: Never
Tomentose Below: Never
Cyphellae: Never
Pseudocyphellae Below: Never
Papillae Below: Never

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

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

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

Asexual Reproduction
Isidia: Never
Soredia: Almost always
Lobules: Never