Pilophorus clavatus - Common Macrolichens of the Pacific Northwest

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Pilophorus clavatus

Overview
PNW Range:
West side	Common
East side	None
Immediate coast	Rare
Alpine or subalpine	None
Habitat:	Partial to deep shade, usually on rocks in old-growth conifer forests at middle elevations.
Substrate:	Noncalcareous rock.
Comments:
Synonymy:	none

Pilophorus clavatus - Habit

Habit
by R. Droker

1/4

Pilophorus clavatus - Habit

Habit
by B. McCune

2/4

Pilophorus clavatus - Habit

Habit
by R. Droker

3/4

Pilophorus clavatus - Habit

Habit
by R. Droker

4/4

❮ ❯

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:	Almost always
Stalks:	Almost always
Squamules:	Sometimes
Single Holdfast:	Never
Dangling Nets:	Never

Upper Surface
Upper Surface Color (Dry)
Pale Gray Green:	Sometimes
Pale Green:	Rarely
Pale Gray:	Almost always
Olive Brown:	Almost always
Brown:	Sometimes
Tan:	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

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

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

Asexual Reproduction
Isidia:	Never
Soredia:	Never
Lobules:	Never