Peltigera polydactylon - Common Macrolichens of the Pacific Northwest

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Peltigera ponojensis >

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Peltigera polydactylon

Overview
PNW Range:
West side	Rare
East side	Uncommon
Immediate coast	Rare
Alpine or subalpine	Uncommon
Habitat:	Montane to alpine, rare in Oregon but increasingly common northward to Alaska.
Substrate:	On soil and mosses over rock
Comments:
Synonymy:	none

Peltigera polydactylon - Lower

Lower
by B. McCune

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Peltigera polydactylon - Lower

Lower
by B. McCune

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Peltigera polydactylon - Lower

Lower
by B. McCune

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Peltigera polydactylon - Habit

Habit
by B. McCune

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Scale: Bar=1mm unless noted

Growth Form
Fruticose:	Never
Foliose:	Almost always
Crustose:	Never
Appressed Foliose:	Sometimes
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):	10 (± 5)

Upper Surface
Upper Surface Color (Dry)
Pale Gray:	Almost always
Dark Gray:	Almost always
Brown:	Sometimes
Tan:	Almost always
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)
Whitish:	Almost always
Pale Gray:	Sometimes
Dark Gray:	Almost always
Black:	Almost always
Brown:	Commonly
Tan:	Commonly
Veined Below:	Almost always
Rhizinate Below:	Almost always
Rhizines Squarrose:	Sometimes
Tomentose Below:	Sometimes
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:	Never
Cyanobacteria Primary Photobiont:	Almost always
Internal Cephalodia:	Never
External Cephalodia:	Never

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