Common Macrolichens of the PNW
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Stereocaulon alpinum
Stereocaulon sterile
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Click on Characteristic name for explanation. Click on image for larger version.
Stereocaulon spathuliferum
Overview
PNW Range:
West side
Uncommon
East side
None
Immediate coast
None
Alpine or subalpine
Rare
Habitat:
Sheltered microsites in cool moist habitats, especially talus slopes and cliffs.
Substrate:
Rock (noncalcareous).
Comments:
Synonymy:
none
P test
by B. McCune
1/6
Branches
by B. McCune
2/6
Soralia
by B. McCune
3/6
Soralia
by B. McCune
4/6
Habit
by B. McCune
5/6
Pseudopodetia
by B. McCune
6/6
❮
❯
Scale: Bar=1mm unless noted
Growth Form
Fruticose
:
Almost always
Foliose
:
Never
Crustose
:
Never
Appressed Foliose
:
Never
Fluffy Foliose or Strappy
:
Never
Dangling Hair
:
Never
Erect Hair
:
Never
Appressed Hair
:
Never
Stalks With Squamules
:
Never
Stalks
:
Almost always
Squamules
:
Never
Single Holdfast
:
Sometimes
Dangling Nets
:
Never
Upper Surface
Upper Surface Color
(Dry)
Pale Green
:
Sometimes
Whitish
:
Almost always
Pale Gray
:
Almost always
Upper Surface Tomentose
:
Sometimes
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
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
:
Almost always
Chemistry
Cortex K+ Yellow
:
Almost always
Medulla P+ Orange or Red
:
Almost always
Medulla P+ Yellow
:
Rarely
Medulla K+ Yellow
:
Almost always
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