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Hypogymnia physodes

Overview
PNW Range:
  West sideAbundant
  East sideAbundant
  Immediate coastCommon
  Alpine or subalpineOccasional
Habitat: Ubiquitous in forests at low to mid elevations, often in nonforested habitats (steppe, shrub thickets, farmlands, etc.).
Substrate: Bark and wood, occasionally on rock or mossy rock.
Comments:
Synonymy: none
Hypogymnia physodes - Habit
Habit
by B. McCune
1/15
Hypogymnia physodes - Ascospores
Ascospores
by B. McCune
2/15
Hypogymnia physodes - Habit
Habit
by B. McCune
3/15
Hypogymnia physodes - Habit
Habit
by B. McCune
4/15
Hypogymnia physodes - Habit
Habit
by B. McCune
5/15
Hypogymnia physodes - Habit
Habit
by B. McCune
6/15
Hypogymnia physodes - Soredia
Soredia
by B. McCune
7/15
Hypogymnia physodes - Lobes
Lobes
by B. McCune
8/15
Hypogymnia physodes - Soredia
Soredia
by B. McCune
9/15
Hypogymnia physodes - Habit
Habit
by B. McCune
10/15
Hypogymnia physodes - Lower surface
Lower surface
by B. McCune
11/15
Hypogymnia physodes - Apothecia
Apothecia
by B. McCune
12/15
Hypogymnia physodes - K+ reddish brown reaction
K+ reddish brown reaction
by B. McCune
13/15
Hypogymnia physodes - Habit
Habit
by B. McCune
14/15
Hypogymnia physodes - P+orange-red
P+orange-red
by B. McCune
15/15
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): 1.5 (± 0.5)

Upper Surface
Upper Surface Color    (Dry) 
   Pale Gray Green: Almost always
   Pale Green: Rarely
   Whitish: Sometimes
   Pale Gray: Almost always
   Dark Gray: Sometimes
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) 
   Black: 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: Almost always
Gelatinous: Never

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

Chemistry
Cortex K+ Yellow: Almost always
Medulla P+ Orange or Red: Almost always
Medulla KC+ Orange, Red, or Pink: Almost always
Medulla UV+ Blue White: Sometimes
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