Apothecia 3-8 mm in diameter. Hairs edge of (243.9) 275.6 - 325.3 (339.7) microns long, with truncated edge almost always, sometimes bifurcated. Shorter exciple hairs, of (138.7) 162.2 - 242.4 (325.7) microns.

Ellipsoidal, verrucous ascospores, of

(18) 18.4 - 20.7 (21.3) × (13.4) 14.1 - 16 (16.6) microns
Q = (1.2) 1.22 - 1.4 (1.5); N = 28
Me = 19.7 x 15.2 microns; Qe = 1.3

Esporal decoration formed by isolated warts of (0.7) 0.9 - 1.4 (1.5) microns in height.

Ascas (238.7) 241.1 - 312.5 (337.2) × (18) 19.5 - 29.3 (30) microns

Paraphysis of (243.9) 275.6 - 325.3 (339.7) microns in length, with terminal element usually widened (6.3) 7.3 - 12.3 (13.4) microns wide.

For the shape, spores decoration and length of the hairs I think of Scutellinia kerguelensis or S. umbrorum. Although I have found in the literature contradictory information on the measures of the hairs and spores decoration in both species.

What is your opinion?

Thank you very much.

Malcolm Greaves, 16-05-2018 15:45

Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?

Francisco
Did you try to see if the spore wall loosened in heated cotton blue.
The spore shape and size and the hair features and size you have fit well for S superba. The sketch of the spore in Schumacher shows the spore as broadly ellipsoid like yours but the SEM picture shows a much more ellipsoid shape.
Although the spores are the right shape they look too small and have the wrong ornamentation for S kerguelensis. The hairs are also too short. The spores are a better fit for S umbrorum but again the hairs are a bit short and have the wrong root and number of septa.
Mal

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Francisco SÁNCHEZ, 17-05-2018 00:22

Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?

Dear Malcom, I have read the description of the species that you propose to me, Scutellinia superba, in the monograph of Schumacher and it seems to me that it coincides a lot with that of my apothecia. I will try to check the separation of outermost wall.

Thank you very much for your didactic comments.

Francisco SÁNCHEZ, 17-05-2018 12:10

Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?

Good afternoon, Malcom.

I do not have acetic acid nor cotton blue.

I have Lactophenol Blue. Can I do the test with this compound?

Malcolm Greaves, 17-05-2018 12:49

Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?

Francisco

I am fairly sure that Lactophenol Blue is what I am calling L Cotton Blue.

Mal