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Unknown lichen Links

Previous Sightings by Marnhull

Thumbnail ImageRed Squirrel on March 12, 2010
Thumbnail ImageOther on March 07, 2010
Thumbnail ImageCommon Strawberry (Fragaria virginiana) on May 19, 2010
Thumbnail ImageRed Squirrel on February 26, 2010
Thumbnail ImageGreen Frog (Rana clamitans) on April 26, 2010
Thumbnail ImageSpeckled Greenshield (Flavopunctelia flaventior) on May 18, 2010
Thumbnail ImageColtsfoot (Tussilago farfara) on April 03, 2010


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Contributors » Marnhull » Unknown lichen

Unknown lichen discovered by Marnhull (#215)

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Sighting Info

Observed: May 22, 2010 @ 4:00 PM
Posted on: May 23, 2010 @ 5:33 PM (diff: 1 days)
I'm posting this in case Mac wants to make a comment. Perhaps the lichens with dark apothecia are Button lichens (from post #91). The rock was pushed to the side of a road in November 1987, so I assume the lichens will soon be 23 years old.

Sighting's Identification

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Newfoundland Nature

Newfoundland Nature

Comments by Site Members (scroll to post comment)

By Mac Pitcher on 5/24/2010 3:07:25 PM

The rusty coloured lichens could possibly be Porpidia flavocaerulescens (Orange Boulder Lichen) or Tremolecia atrata (Rusty Rock Lichen), but these are guesses. Microscopy and chemical testing may be required to confirm. There are also other orangish crustose lichens on rock. Interesting age observation - crustose on rock are often slow-growing, and maybe hundreds, if not thousands of years old. Thanks for posting! Mac

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