Northwest Lichenologists

crustose on basalt

  • 13 Apr 2016 11:21 AM
    Message # 3951863

    Hi all,


    Does anyone have an idea what genus this little crustose lichen is? All spot tests including I, are negative. It appears to have soreidia and has green algae. The areoles are from .03-1 mm wide. It's from around 4200 feet elevation in the east Cascades. In the photo gallery, it's called LABE-398.


    Thanks

    Last modified: 13 Apr 2016 11:38 AM | Steve Sheehy
  • 14 Apr 2016 7:35 AM
    Reply # 3953342 on 3951863
    Bruce McCune (Administrator)

    This looks like the Lecidea atrobrunnea group, sterile, with many of the thallus edges and areoles becoming necrotic and turning white.

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