Notes: This is the first time I observed this species of Enterographa. The genus itself is quite new for me and the first observation of a species of it was posted only one and a half month ago (though based on material of last year, see observation 200180).
A big amount of specimens growing on the bark of almost all the trees at this place, visited for the first time. The habitat was shared with other crustose lichens and it was often associated with another Entographa, E. hutchinsiae, usually with contiguous thalli. Also abundant were Graphis and Pyrenula. It was more common on Acer pseudoplatanus that are well represented here, but it also grew on other trees.
I’m pretty sure about the classification of these specimens as Enterogrpha elaborata, since all their features coincide with those given in the Ref. 1 (British Flora) for that species and the photos are perfect copies of that given in Ref. 2.
Here are some of their features:
- Thallus grenish-grey, refractive, reacting C+ red (due to the presence of Gyrophoric acid) quickly fading, K- or K+ yellowish, KC+ red;
- Apothecia lirellate, lirellas dark brown, conspicuous, immersed in the thallus, serpentine, branched or stellate, surronded by a whitish zone;
- Asci elongated clavate, 8-spored;
- Spores hyaline, halonate, straight or slightly curved, multisepate: 8-15(?) septa, with the following dimensions:
(40.3) 46.7 – 56.8 (59.5) x (3.9) 4.1 – 4.8 (5) µm
Q = (9.8) 10.3 – 12.6 (13.8) ; N = 28
Me = 51.8 × 4.5 µm ; Qe = 11.5
(The values in the British Flora are – septa: 8-17, dimensions: 32-65 × 2.5-4.5 µm).
Enterographa elaborata is said to be very rare in Britain (Ref. 1) and to exist in Western Europe, Mediterranean and Macaronesia. As usual I know nothing about its abundance in Portugal.
This observation includes a set of photos for the purpose of comparing the features of the specimens in this observation and those of E. hutchinsiae (for which the material of observation 202256 was used).
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|I’d Call It That||3.0||6.44||1||(zaca)|
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Created: 2015-04-25 13:31:15 EDT (-0400)
Last modified: 2015-04-25 13:43:31 EDT (-0400)
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