Melanelia stygia - Common Macrolichens of the Pacific Northwest

< Melanelia hepatizon

Melanelixia glabratula >

Click on Characteristic name for explanation. Click on image for larger version.

Melanelia stygia

Overview
PNW Range:
West side	Rare
East side	Uncommon
Immediate coast	None
Alpine or subalpine	Common
Habitat:	Montane to alpine exposed to partly sheltered habitats.
Substrate:	Rock.
Comments:
Synonymy:	none

Melanelia stygia - Apothecia

Apothecia
by B. McCune

1/4

Melanelia stygia - Habit

Habit
by B. McCune

2/4

Melanelia stygia - Apothecia

Apothecia
by B. McCune

3/4

Melanelia stygia - Habit

Habit
by R. Droker

4/4

❮ ❯

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):	1.2 (± 0.6)

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

Lower Surface (Foliose)
Lower Surface Color (Dry)
Black:	Almost always
Brown:	Commonly
Tan:	Commonly
Veined Below:	Never
Rhizinate Below:	Almost always
Rhizines Squarrose:	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:	Never

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

Chemistry
Medulla P+ Orange or Red:	Sometimes

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