This observation refers to the lichen with grey thallus and black apothecia.
It is the first time I encountered a Buellia with 3-septate spores, having the following average dimensions: Me = 17.2 × 8.5 µm ; Qe = 2 (N=26).
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|I’d Call It That||3.0||4.52||1||(J-Dar)|
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to the K reaction of this specimen and it has no value, since the colour is dark-grey or blackish. Something went wrong!
The paper of Giralt et al. 2010 refers two chemotypes, both corresponding to specimens found at the north part of my country, whereas this specimen was observed at the center of Portugal.
I will look to the paper you mention and try to recover the data of this observation.
Giralt et al. 2010. A New Chemotype of Buellia triseptata (Physciaceae) describes this species well, with both chemotypes showing K+ reactions. I couldn’t see your photo well enough to see if you got K+? The new chemotype they describe is based on collections from Portugal, in the mountains of the northwest part of the country, at 700 meters. I’m curious how this specimen lines up with their described chemotypes! A pdf of the paper is online at Researchgate.
I could read the article mentioned in my last message. The authors present a description of the species Buellia triseptata based on material collected in the Iberian peninsula. I believe that my sample is consistent with this description, at least in part I observed. However, there are two points of doubt, in relation to a chemical reaction that did not seem to be those mentioned therein, and the other towards the habitat. This specimen was collected in an area whose altitutude does not reach the 200m, where once the vegetation was most abundant Quercus coccifera, but has given way to agricultural land at the site of observation remains a small cluster of trees, but some maybe of other species that I could not identify.
I’ll “send you a question” in a second because I don’t think I have your email address…
The following paper studies Buellia triseptata in the Iberian peninsula. Unfortunately, I could only read the abstract, since I have no access to the Journal where it was published.
Mireia Giralt and Anders Nordin (2002). Buellia Triseptata in the Iberian Peninsula. The Lichenologist, 34 , pp 89-94 doi:10.1006/lich.2002.0375
there is none in the portuguese checklist. Hahaha!
Created: 2012-03-27 15:23:12 CST (-0500)
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