Scytinium palmatum - Common Macrolichens of the Pacific Northwest

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Scytinium palmatum

Overview
PNW Range:
West side	Common
East side	Rare
Immediate coast	Common
Alpine or subalpine	None
Habitat:	Roadcuts, roadsides, poorly revegetated areas in clearcuts, outcrops and talus areas; low to mid elevations; populations on bark tend to be in hardwood stands at low elevations.
Substrate:	Soil, gravel, rocks, mosses over soil or rock, rarely bark.
Comments:
Synonymy:	Leptogium palmatum

Scytinium palmatum - Habit

Habit
by R. Droker

1/2

Scytinium palmatum - Habit

Habit
by R. Droker

2/2

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Scale: Bar=1mm unless noted

Growth Form
Fruticose:	Almost always
Foliose:	Almost always
Crustose:	Never
Appressed Foliose:	Never
Fluffy Foliose or Strappy:	Almost always
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):	8 (± 4)

Upper Surface
Upper Surface Color (Dry)
Pale Gray:	Sometimes
Dark Gray:	Almost always
Black:	Rarely
Brown:	Almost always
Upper Surface Tomentose:	Never
Upper Surface Pruinose or Scabrid:	Never
Upper Surface with Network of Ridges:	Commonly
Upper Surface with Pseudocyphellae:	Never
Upper Surface with Holes into Cavity:	Never
Cilia on Margins:	Never

Lower Surface (Foliose)
Lower Surface Color (Dry)
Dark Gray:	Almost always
Black:	Almost always
Brown:	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:	Never
Gelatinous:	Almost always

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:	Never