When: 2015-03-29

Collection location: Sintra, Portugal [Click for map]

Who: zaca

No specimen available

Growing on siliceous rock.


Chemical reactions on thallus;
Microscopy: Sections;
Microscopy: Asci and spores;
Microscopy: Spores.

Proposed Names

29% (1)
Recognized by sight
58% (1)
Used references: Ref. 1 – British Flora: Smith et al. (eds.), The Lichens of Great Britain and Ireland, The British Lichen Society, 2nd ed., 2009.
Ref. 2: http://www.irishlichens.ie/pages-lichen/l-183.html
Based on microscopic features
Based on chemical features

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= Observer’s choice
= Current consensus


Add Comment
Good to know!
By: zaca
2015-04-01 17:36:51 CDT (-0400)

I think that it is widespread here too. I’m sure I found it before, but at the time I was not able to observe the spores and made the chemical reactions on sections.

Nice, I just learned this species, too
By: Jason Hollinger (jason)
2015-04-01 17:25:23 CDT (-0400)

Found it in Idaho and Utah. I was thinking it was a desert and/or alpine species. Apparently more widespread than I thought!

Microscopy added.
By: zaca
2015-04-01 16:22:11 CDT (-0400)

(14.7) 16 – 20.5 (21.5) x (6.8) 7 – 9.4 (9.5) µm
Q = (1.9) 2 – 2.5 (3) ; N = 25
Me = 18.6 × 8.2 µm ; Qe = 2.3

Some additional features:
Exciple – Thick, formed by hyphae wider than the hymenium, K+ yellow-brownish, KC+ yellow-brown intensifying with redish tones;
hymenium – hyaline or pale coloured, K+ yellowish.