Observation 22204: Protopannaria pezizoides (Weber) P.M. Jørg. & S. Ekman
When: 2009-06-07
Herbarium specimen reported

Notes: Found on dry, sunny, exposed mossy bank amid a perennial seep beside the main park road.

I thought this was what Psoroma hypnorum would turn into if dried out and exposed to intense sun, however it does not turn green even when wet, and the photobiont is a cyanobacterium (Nostoc) not green alga. Also, although I’ve never found it!, Psoroma should have cephalodia among the squamules. Otherwise they are remarkably similar, right down to the spores.


spores in water at 1000x
Nostoc in the loose or loosely-clumped form (it often forms strings of beads); distiguished by the small size (less than 7-8 µm) and uniform somewhat darkish or at least not-grass-green color.

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Trevor Goward
Based on microscopic features: Photobiont is Nostoc not a green alga; spores large and conspicuously rough-sculptured.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2009-06-16 01:15:46 EEST (+0300)
Last modified: 2009-06-16 01:15:46 EEST (+0300)
Viewed: 32 times, last viewed: 2016-10-28 14:28:02 EEST (+0300)
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