Observation 56315: Nephroma arcticum (L.) Torss.
When: 2010-10-21
Herbarium specimen reported

Notes: on mossy doug-fir log with Peltigera species, including P. britannica

We’ve been looking for the cyanomorph of this species for ages, this is a real treat. Notice that the cyanomorph is not just a formless gray blob — it has reticulate maculae and isidium-like protuberances around the margins, suggesting that, rare though it may be in recent evolutionary times, it descends from a lichen in its own right with complex thallus structure. And a structure rather unlike that of the much larger-lobed, smooth, even-colored chloromorph. (The undersides are very similar, though — not shown in these photos.)

Images

113879
cyanomorph and chloromorph together
113880
cyanomorph and chloromorph together
113881
cyanomorph and chloromorph together
113882
tiny lobule of chloromorph growing out of underside of cyanomorph

Proposed Names

87% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
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Created: 2010-10-23 02:15:32 PDT (-0700)
Last modified: 2010-10-23 02:29:22 PDT (-0700)
Viewed: 166 times, last viewed: 2016-03-28 12:47:45 PDT (-0700)
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