Common Macrolichens of the PNW Home Species List Identification Key Characteristics Color Chart Project Page About
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Umbilicaria torrefacta

Overview
PNW Range:
  West sideOccasional
  East sideOccasional
  Immediate coastRare
  Alpine or subalpineOccasional
Habitat: Open to sheltered rock outcrops and talus, low to high elevations.
Substrate: Rock (noncalcareous).
Comments:
Synonymy: none
Umbilicaria torrefacta - Trabeculae
Trabeculae
by B. McCune
1/10
Umbilicaria torrefacta - Upper
Upper
by B. McCune
2/10
Umbilicaria torrefacta - Apothecia
Apothecia
by B. McCune
3/10
Umbilicaria torrefacta - Lower
Lower
by B. McCune
4/10
Umbilicaria torrefacta - Apothecia
Apothecia
by B. McCune
5/10
Umbilicaria torrefacta - Spores
Spores
by B. McCune
6/10
Umbilicaria torrefacta - Lower
Lower
by B. McCune
7/10
Umbilicaria torrefacta - Apothecia
Apothecia
by B. McCune
8/10
Umbilicaria torrefacta - Holes
Holes
by B. McCune
9/10
Umbilicaria torrefacta - Rhizines
Rhizines
by B. McCune
10/10
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: Almost always
Dangling Nets: Never
Lobe Width (mm): 15 (± 7)

Upper Surface
Upper Surface Color    (Dry) 
   Brown: Almost always
   Tan: Sometimes
Upper Surface Tomentose: Never
Upper Surface Pruinose or Scabrid: Never
Upper Surface with Network of Ridges: Rarely
Upper Surface with Pseudocyphellae: Never
   Upper Surface with Holes into Cavity: Never
Cilia on Margins: Never
Lower Surface (Foliose)
Lower Surface Color    (Dry) 
   Whitish: Sometimes
   Black: Sometimes
   Brown: Almost always
   Tan: Almost always
Veined Below: Never
Rhizinate Below: Commonly
   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
Medulla C+ Orange, Red, or Pink: Almost always
Medulla KC+ Orange, Red, or Pink: Almost always
Medulla UV+ Blue White: Rarely
Sexual Reproduction
Perithecia: Never
Apothecia: Commonly
   Mazaedium: Never
Disk Color    (Dry) 
   Disk Black: Almost always

Asexual Reproduction
Isidia: Never
Soredia: Never
Lobules: Never
Copyright © 2019-2024 by Bruce McCune & Sunia Yang     Source for Habitat and Substrate: Macrolichens of the Pacific Northwest    Other Rights: Attribution-NonCommercial 4.0 International