Observation 103718: Buellia leptoclinoides (Nyl.) J. Steiner
When: 2012-07-28
Who: zaca
No herbarium specimen

Notes: Specimen growing on exposed rock.
The following features were used to key out this specimen as Buellia leptoclinoides, using the key within British Flora (see the reference):

- Thallus not immersed in lichens or on crustose lichens;
- Thallus without soradia;
- On rock;
- Apothecia supericial at maturity;
- Thallus C-
- Thallus K+ yellow (persistent);
- Hymenium with numerous oil droplets (presumably, at least is not clear);
- Ascospores 14.5-23.5 × 6.5-11.5.

I obtained the following average dimensions for the spores:
Me = 20 × 11.1 µm ; Qe = 1.8 (N=25).
This species is the one with bigger spores among those with the same initial features in the key. Some close species can be separated by chemistry, e.g. B. subdisciformis (K+ yellow to red), B. saxorum (C+ red), B. spuria (K+ yellow-orange). The similar B. leptocline has smaller and narrow spores.
This specimen has a pure grey thallus with a black prothallus whereas in the description of B. leptoclinoides a pale yellow-grey thallus is mentioned and the prothallus is not referred.
Unfortunately I was not able to find photographs of this species.

Proposed Names

58% (1)
Eye3 Eyes3
Used references: Smith et al., The Lichens of Great Britain and Ireland, The British Lichen Society, 2009.
Based on microscopic features
Based on chemical features

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
No one has commented yet.

Created: 2012-08-02 19:24:31 EDT (-0400)
Last modified: 2012-08-03 15:41:26 EDT (-0400)
Viewed: 47 times, last viewed: 2016-05-10 07:55:49 EDT (-0400)
Show Log