Observation 64337: Menegazzia terebrata (Hoffm.) A. Massal.

When: 2011-03-12

Collection location: Millersylvania State Park, Thurston Co., Washington, USA [Click for map]

Who: Drew Henderson (Hendre17)

No specimen available

On Alnus rubra.

Temp- mid 50’s raining hard past 24 hrs.

Proposed Names

56% (1)
Recognized by sight: abundant powdery soredia in uniform soralia
Used references: prelim. keys to Ways of Enlichenment

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I don’t know
By: Jason Hollinger (jason)
2011-03-13 15:35:32 PDT (-0700)

You’re supposed to have both species. Keep posting them, and maybe we’ll start to see a pattern emerge. :) Here’s all the info I have to go off of:

1a. Soredia-bearing outgrowths essentially undivided along the outer margins; soredia therefore diffuse over a broad button-like or collar-like platform [sAK, wBC, wWA, wOR] … Menegazzia terebrata

1b. Soredia-bearing outgrowths often wavy or much-divided along the outer margins; soredia therefore at least partly in irregular clusters … Menegazzia subsimilis

I think you’re right-
By: Drew Henderson (Hendre17)
2011-03-13 14:35:59 PDT (-0700)

Although, a few of the images from the observations earlier this week had mounds of soredia as well(in small areas on the default image for subsimilis) I have been only finding these so far on Alnus rubra here in Western Washington. If funding for lichen studies was available from our state I would be the first to jump at the chance to monitor and study these- they’re truly a beautiful species and I want to know more about them too :)

May be the other species…
By: Jason Hollinger (jason)
2011-03-13 14:25:21 PDT (-0700)

I’m hardly an expert, but compare the soredia on this specimen with those of the other Menegazzia you posted a few days ago. This one has big powdery piles of soredia almost in mounds; the others have ragged coarse soredia clumped in tatters.

I wish I knew the relative abundance of the two species, or what their habitat preferences were.

Created: 2011-03-13 13:52:30 PDT (-0700)
Last modified: 2011-03-13 14:36:15 PDT (-0700)
Viewed: 62 times, last viewed: 2017-06-09 05:39:06 PDT (-0700)
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