Observation 202039: Porpidia macrocarpa (DC.) Hertel & A.J. Schwab
When: 2015-03-29
Collection location: Sintra, Portugal [Click for map]
Who: zaca
No herbarium specimen

Notes: Growing on siliceous rock.

Images

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Chemical reactions on thallus;
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Microscopy: Sections;
514381
Microscopy: Asci and spores;
514382
Microscopy: Spores.

Proposed Names

29% (1)
Recognized by sight
58% (1)
Eye3 Eyes3
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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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Good to know!
By: zaca
2015-04-01 14:36:51 PDT (-0700)

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 14:25:23 PDT (-0700)

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 13:22:11 PDT (-0700)

Spores:
(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.

Created: 2015-03-29 12:56:00 PDT (-0700)
Last modified: 2015-04-01 13:14:51 PDT (-0700)
Viewed: 78 times, last viewed: 2016-07-21 17:39:52 PDT (-0700)
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