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Rhizoplaca chrysoleuca  >
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Ramalina thrausta

PNW Range:
  West sideUncommon
  East sideUncommon
  Immediate coastUncommon
  Alpine or subalpineNone
Habitat: Sporadic in (1) low elevation moist forests, especially riparian spruce or fir east Cascades and (2) low-elevation old-growth Douglas fir in and west Cascades, and (3) conifer forests on the immediate coast.
Substrate: On bark and wood, often conifers.
Synonymy: none
Ramalina thrausta - Branches
by B. McCune
Ramalina thrausta - Soredia
by B. McCune
Ramalina thrausta - Soredia
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: Almost always
Erect Hair: Never
Appressed Hair: Never
Stalks With Squamules: Never
Stalks: Never
Squamules: Never
Single Holdfast: Never
Dangling Nets: Never

Upper Surface
Upper Surface Color    (Dry) 
   Pale Yellow Green: Almost always
   Pale 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

Inside (Medulla) Yellow or Orange: Never
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

Usnic Acid: Almost always
Cortex KC+ Yellow: Almost always
Sexual Reproduction
Perithecia: Never
Apothecia: Rarely
   Mazaedium: Never
Disk Color    (Dry) 
   Disk Pale Greenish: Almost always
   Disk Brown or Tan: Almost always

Asexual Reproduction
Isidia: Never
Soredia: Commonly
Lobules: Never