Observation 115793: Lobaria linita (Ach.) Rabenh.
When: 2012-10-21
No herbarium specimen

Notes: This dried lichen was being used as foliage interest in the mushroom displays.

Proposed Names

31% (2)
Eye3 Eyes3
Used references: Mosses, Lichen and Ferns of Northwest North America; Lichen of North America
28% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Could be
By: Jason Hollinger (jason)
2012-11-05 13:22:22 CST (-0600)

Look for scars and budding apothecia. If they’re growing but being mechanically removed, you should be able to find both.

Another question, Jason?
By: Daniel B. Wheeler (Tuberale)
2012-11-05 12:01:04 CST (-0600)

My collecting on the coast has not shown any apothecia. I’m wondering: could constant blowing sand in the sand dunes area be knocking these off quickly?

I agree
By: Jason Hollinger (jason)
2012-11-05 11:39:14 CST (-0600)

I rule out L. pulmonaria, too. But the margin may be cut up enough to be L. oregana, or it may just be ragged from rough use. L. oregana should be the more common species.

Apothecia may be more common in some areas than in others, no one’s really done a study of it. But all but a few species (e.g., Lepraria) will produce ascomata once in a while.

These may have been provided by Maggie Rogers.
By: Daniel B. Wheeler (Tuberale)
2012-11-05 06:44:00 CST (-0600)

She likes to use dried lichens within the displays. Most years she has included a display of lichens, too. But not this year.

I agree the identification is not precise. I could not tell what the lichns were originally growing on: terrestrial or arboreal. I included the photo because the apothecia were present. I have been looking specifically for lichens with apothecia so I could study them more closely. Seems I’m not looking hard enough.

I considered L. pulmonaria and L. oregana, but didn’t see other features (ischidea and soridea) I expected to see along the raised ribbing. L. linita’s description doesn’t seem to have those features, so went with it. But I grant the decision was close between L. oregana and L. linita.

Presence of apothecia is not necessarily sufficient
By: Jason Hollinger (jason)
2012-11-05 00:33:44 CST (-0600)

Both L. pulmonaria and L. oregana can grow apothecia, too. The percentage of thalli with apothecia is actually pretty high, like 15 or 20% in one study, if I remember right.

In this case, the margins look like they might be lobulate, suggesting L. oregana… or these specimens are just a bit ragged from rough handling as the backdrop for mushroom displays!

Created: 2012-11-04 23:06:39 CST (-0600)
Last modified: 2012-11-05 11:39:46 CST (-0600)
Viewed: 44 times, last viewed: 2016-12-06 15:04:06 CST (-0600)
Show Log