Observation 56315: Nephroma arcticum (L.) Torss.

When: 2010-10-21

Collection location: Grouse Lake, Wells Gray region, British Columbia, Canada [Click for map]

Who: Jason Hollinger (jason)

Specimen available

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.)


cyanomorph and chloromorph together
cyanomorph and chloromorph together
cyanomorph and chloromorph together
tiny lobule of chloromorph growing out of underside of cyanomorph

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Created: 2010-10-23 05:15:32 CDT (-0400)
Last modified: 2010-10-23 05:29:22 CDT (-0400)
Viewed: 172 times, last viewed: 2018-10-17 14:31:15 CDT (-0400)
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