When: 2014-09-14

Collection location: Planalto das Cezaredas, Portugal [Click for map]

Who: zaca

No specimen available

Notes:
This species is not one of the most frequent of Collema, but is not uncommon here. However, it is rare when fertile and, as far as I can tell, this is my first observation in such state. Naturally I took the oportunity to make the microscopy, at least to confirm the identification. I obtained the following dimensions for the spores:
(17.1) 18.6 – 27.3 (30.4) x (11) 12 – 15.5 (18.7) µm
Q = (1.3) 1.4 – 1.9 (2) ; N = 25
Me = 22.4 × 13.5 µm ; Qe = 1.7.

Images

Microscopy: Apothecial section;
Microscopy: Apothecial section;
Microscopy: Asci and spores;
Microscopy: Hymenium with melzer.

Proposed Names

87% (1)
Recognized by sight
Used references: P. Carvalho, Collema, Sociedade Española de Liquenología, Flora Liquenológica Ibérica, vol. 10, 2012; British Flora: Smith et al., The Lichens of Great Britain and Ireland, British Lichen Society, 2nd ed., 2009.
Based on microscopic features

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= Observer’s choice
= Current consensus

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