Common Macrolichens of the PNW Home Species List Identification Key Characteristics Color Chart Project Page About
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Stereocaulon tomentosoides

Overview
PNW Range:
  West sideOccasional
  East sideOccasional
  Immediate coastUncommon
  Alpine or subalpineUncommon
Habitat: Cool rocky areas in the mountains, especially talus slopes, outcrop areas, and lava flows.
Substrate: On rock or humus or soil over rock or in moss mats.
Comments:
Synonymy: none
Stereocaulon tomentosoides - Apothecia
Apothecia
by B. McCune
1/7
Stereocaulon tomentosoides - P test
P test
by B. McCune
2/7
Stereocaulon tomentosoides - Cephalodia
Cephalodia
by B. McCune
3/7
Stereocaulon tomentosoides - Phyllocladia
Phyllocladia
by B. McCune
4/7
Stereocaulon tomentosoides - Habit
Habit
by B. McCune
5/7
Stereocaulon tomentosoides - Tomentum
Tomentum
by B. McCune
6/7
Stereocaulon tomentosoides - Lower
Lower
by B. McCune
7/7
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: Almost always
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 UV+ Blue White: Almost always
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
Copyright © 2019-2022 by Bruce McCune & Sunia Yang     Source for Habitat and Substrate: Macrolichens of the Pacific Northwest    Other Rights: Attribution-NonCommercial 4.0 International