Toninia coelestina is a very rare species in Britain which was not seen this century, according to the British Flora. There it is mentioned that it exists in Europe and nothing else. However, the features of this specimen lead to this species, following the key therein. I looked unsuccesfully for photos of it in the internet.
Some features of this specimen, growing in a cliff over the sea in a place dominated by calcareous rocks, together with other Toninia spp:
- Thallus squamulose forming a more or less continuous crust;
- Upper surface greyish;
- Big apothecia (more than 1 mm) dark brown to almost black, mainly plane with a tiny concolor rim, that become excluded with age, some flexuose, others convex;
- Hypothecium dark reddish brown;
- Paraphyses +/- lax, not conglutinated, swollen at the apice;
- Acicular spores several septate, some with size about 25 um others much bigger (my equipment does not permit details here).
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Created: 2012-08-27 22:07:09 BST (+0100)
Last modified: 2012-08-27 22:07:10 BST (+0100)
Viewed: 19 times, last viewed: 2017-08-02 22:09:11 BST (+0100)