Observation 202953: Verrucaria macrostoma Dufour ex DC.
When: 2015-04-10
Collection location: Sintra, Portugal [Click for map]
Who: zaca
No herbarium specimen

Notes: Growing on a cement wall inside a village.
These specimens fit well into the description given for Verrucaria macrospora in Ref. 1 and the dimensions of the spores are within the ranges given there for that species:
(24.1) 25.2 – 29.4 (30.8) x (12.6) 13.2 – 14.8 (16.3) µm
Q = (1.6) 1.8 – 2.1 (2.2) ; N = 26
Me = 27.3 × 14.2 µm ; Qe = 1.9.
These specimens and their spores are also very similar to those presented in Ref. 2.

Proposed Names

86% (1)
Eye3 Eyes3
Used references: Ref. 1 – British Flora – The Lichens of Great Britain and Ireland, The British Lichen Society, 2nd ed., 2009.
Ref. 2: http://www.lekermeur.net/...
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2015-04-17 20:22:10 EDT (-0400)
Last modified: 2015-04-17 20:22:13 EDT (-0400)
Viewed: 15 times, last viewed: 2016-11-19 09:09:14 EST (-0500)
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