Collection location: Sintra, Portugal [Click for map]
The genus Glyphis is one of the oldest in tha family Graphidaceae. It groups lirelate lichens with stromatic lirellas, usually coffee coloured pruinose, having hyaline multiseptate/muriform spores. Glypis spp. have a pantropical distribution. However, some of its species are known to exist in more temperate climates, as is the case of the species G. cicatricosa.
As is happening with me all the time finding new species is a matter of strategy with lots of luck. Relatively to the species in this observation, a kind of mith in lirelate lichens, I thought to had found it some 2 and a half years ago (see observation 76257), which now I know to be not true because, in the meantime I was able to identify the species (to be consider in a forthcoming observation). Talking with a portuguese lichenogist last year, I already knew that G. cicatricosa exist among us at this location, but the known specimens disappeared meanwhile due to the overthrow of the host tree.
It was a big surprise for me to have found it two days ago, precisely my last observation of the day (see observation 164529). I have looked arround for new specimens during some minutes but with no success. Yesterday I went back to the place and found a new specimen, some twenty metters from the former observation, again having Acer pseudoplatanus as host tree. This new specimen is a mature one with lots of apothecia, though all small and none with the dimensions of the biggest in the first observation. Making a quick microscopic observation, all the data of the previous one were confirmed, but the observation of the asci, with lots of them full of spores, was much better than in the former that only has a small number of mature asci:
- Ascomata living in small completely carbonized cameras of the substrate;
- Hymenium not inspersed light coloured;
- Paraphyses with a parallel distribution in the hymenium, not branched except maybe at apex, the dark brown tips going outside of the hymenium, which gives a special
configuration to the microscopic analisys;
- Asci of “Graphis type”, i.e. elongate when young becoming clavate when full of spores with a distinct ocular chambre, with the following average dimensions:
Me = 119.07 × 17.79 um ; Qe = 6.69 (N=28);
- Spores multiseptate (with up to 11 septa) with round lumina; The average dimensions obtained for this specimen are:
Me = 42.95 × 8.5 um ; Qe = 5.1 (N=46).
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|I’d Call It That||3.0||6.54||1||(zaca)|
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Created: 2014-05-03 11:46:33 EDT (-0400)
Last modified: 2019-04-07 12:35:41 EDT (-0400)
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