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13-12-2018 09:53

Pyreno with special spores.
Per Marstad Per Marstad

This was growing on Fagus, in Norway.The spores ar

12-12-2018 20:58

Long spores.
Per Marstad Per Marstad

I found this on Fagus. Spores 60-75 x 5 my, with 8

14-11-2018 19:07

Un Hymenoscyphus !
Andgelo Mombert

Bonsoir,Sur bois mort de feuillu. Apothécies sess

06-12-2018 07:35

Trichopeziza ?
Ethan Crenson

Hello all, These were found by my friend recently

08-12-2018 15:13

Yellow on wood.
Per Marstad Per Marstad

This was growing on Fagus, 2-3 mm. The spores are

09-12-2018 23:06

Unknown schizothecium
Joop van der Lee

Found on cow dung. Fruitbody is covered with tufs

06-12-2018 00:02

On Phytolacca old stem
Elsa Sousa

Good evening,I need your sharp eyes on this ascos.

11-12-2018 17:31

Literature searched
Peter Püwert Peter Püwert

Can somebody help ? Massee G. et Salmon E. S. (19

11-12-2018 23:18

Revista Errotari 2018
Iglesias Plácido

Hola amigos, est sortie la revue Errotari de cette

10-12-2018 23:47

Asco coprophile sur crotte de lapin (rabbit dung)
BERNARD CLESSE BERNARD CLESSE

Que pensez-vous de cette récolte, faite sur crott

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SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco SÁNCHEZ, 15-05-2018 23:41
Francisco SÃNCHEZApothecians that grew, a few days ago, on very humid soil with humus, in riverbank forest with Alnus, Populus and Fraxinus.

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.

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Malcolm Greaves, 16-05-2018 15:45
Malcolm Greaves
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
Francisco SÃNCHEZ
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
Francisco SÃNCHEZ
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
Malcolm Greaves
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco

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

Mal