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Melanelixia glabratula  >
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Melanelia stygia

Overview
PNW Range:
  West sideRare
  East sideUncommon
  Immediate coastNone
  Alpine or subalpineCommon
Habitat: Montane to alpine exposed to partly sheltered habitats.
Substrate: Rock.
Comments:
Synonymy: none
Melanelia stygia - Apothecia
Apothecia
by B. McCune
1/4
Melanelia stygia - Apothecia
Apothecia
by B. McCune
2/4
Melanelia stygia - Habit
Habit
by B. McCune
3/4
Melanelia stygia - Habit
Habit
by R. Droker
4/4
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Commonly
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): 1.2 (± 0.6)

Upper Surface
Upper Surface Color    (Dry) 
   Black: Rarely
   Olive Black: Rarely
   Olive Brown: Almost always
   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) 
   Black: Almost always
   Brown: Commonly
   Tan: Commonly
Veined Below: Never
Rhizinate Below: Almost always
   Rhizines Squarrose: Never
Tomentose Below: Never
Cyphellae: Never
Pseudocyphellae Below: Never
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

Chemistry
Medulla P+ Orange or Red: Sometimes
Sexual Reproduction
Perithecia: Never
Apothecia: Sometimes
   Mazaedium: Never
Disk Color    (Dry) 
   Disk Brown or Tan: Almost always

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Sometimes