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Dermatocarpon miniatum  >
Click on Characteristic name for explanation. Click on image for larger version.
Dermatocarpon deminuens

Overview
PNW Range:
  West sideOccasional
  East sideOccasional
  Immediate coastOccasional
  Alpine or subalpineRare
Habitat: Streamside rock, seepage tracks, cliff faces, and otherwise intermittently wet habitats, low to middle elevations
Substrate: Rock, noncalcareous.
Comments: Most PNW material previoiusly identified as D. meiophyllizum belongs in the D. deminuens group. D. meiophyllizum does not occur in the PNW.
Synonymy: Dermatocarpon meiophyllizum
Dermatocarpon deminuens - Upper surface
Upper surface
by B. McCune
1/11
Dermatocarpon deminuens - Habit
Habit
by B. McCune
2/11
Dermatocarpon deminuens - Habit
Habit
by B. McCune
3/11
Dermatocarpon deminuens - Habit
Habit
by B. McCune
4/11
Dermatocarpon deminuens - Lower
Lower
by B. McCune
5/11
Dermatocarpon deminuens - Lower
Lower
by B. McCune
6/11
Dermatocarpon deminuens - Upper surface
Upper surface
by B. McCune
7/11
Dermatocarpon deminuens - Melzer
Melzer's test
by B. McCune
8/11
Dermatocarpon deminuens - Perithecium section in IKI
Perithecium section in IKI
by B. McCune
9/11
Dermatocarpon deminuens - Spores
Spores
by B. McCune
10/11
Dermatocarpon deminuens - Upper surface
Upper surface
by B. McCune
11/11
Scale: Bar=1mm unless noted
Growth Form
Fruticose: Never
Foliose: Almost always
Crustose: Never
Appressed Foliose: Almost always
Fluffy Foliose or Strappy: Never
Dangling Hair: Never
Erect Hair: Never
Appressed Hair: Never
Stalks With Squamules: Never
Stalks: Never
Squamules: Never
Single Holdfast: Commonly
Dangling Nets: Never
Lobe Width (mm): 4 (± 2)

Upper Surface
Upper Surface Color    (Dry) 
   Pale Gray: Almost always
   Dark Gray: Almost always
   Brown: Commonly
Upper Surface Tomentose: Never
Upper Surface Pruinose or Scabrid: Sometimes
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) 
   Black: Almost always
   Brown: Almost always
   Tan: Almost always
Veined Below: Never
Rhizinate Below: 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

Sexual Reproduction
Perithecia: Almost always
Apothecia: Never
   Mazaedium: Never
Disk Color    (Dry) 

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never