Observation 242274: Rimularia Nyl.

When: 2016-06-04

Collection location: Serra de São Mamede, Portugal [Click for map]

Who: zaca

No specimen available

Growing on siliceous rock.


Microscopy: Asci staining in IKI (center) and spores.
Microscopy: On the left an apothecial section and its KOH reaction; On the right view of the epihymenium and its IKI reaction;

Proposed Names

29% (1)
Recognized by sight
58% (1)
Used references: British Flora
Based on microscopic features

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= Observer’s choice
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Add Comment
Microscopy added.
By: zaca
2016-06-23 12:19:06 CEST (+0200)

The microscopy of this specimen did not go right. However, this is a point that can give some highlight about its genus. In fact, if one looks closely to the IKI stain of the asci, one can see an unusual thollus reaction: the central part around the opening tube is bluish like in Porpidia but in addition the flanks of the tholus are also blue. Such ascus is referred as Rimularia -type in the British Flora. Taking into account that the spores are simple, brodly ellipsoid to subglobose, the hymenium is hyaline below and brown above reacting I+ blue, I think that Rimularia the genus of this specimen. What is the species?