Hymenoscyphus? sobre piñas - Forum ASCOFrance

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Hymenoscyphus? sobre piñas

Rubén Martínez-Gil, 10-09-2017 22:33

Hola a todos.

Subo unas fotos de un Hymenoscyphus? que encontramos ayer sobre piñas de P. sylvestris a unos 1200 metros.

Miden hasta 3 mm de diámetro.

Esporas de 15-18,8 x 5,1-6,1 micras. Paráfisis filiformes con gran contenido vacuolar.

Ascas amiloides, aporrincas.

E ectal de textura angularis con hifas cilíndricas.

Pensé en Hymenoscyphus lutescens, pero este creo que tiene ascas pleurorrincas y esporas más cortas y más estrechas.

¿Qué les parece?

Gracias por su ayuda.

Rubén

Gilbert MOYNE, 10-09-2017 23:03

Re : Hymenoscyphus? sobre piñas

Ca me fait penser à H. parasazavae récolté l'an passé sur aiguilles de sapin....
Gilbert

Hans-Otto Baral, 11-09-2017 11:54

Re : Hymenoscyphus? sobre piñas

You can test KOH whether the many guttules in the spores disappear - only a few of the drops are oil drops.

Rubén Martínez-Gil, 11-09-2017 23:25

Re : Hymenoscyphus? sobre piñas

Hola a todos, gracias Gilbert, Zotto por su ayuda.

Mando unas fotos de esporada libre con KOH (5%). Yo creo que no ha variado casi nada la cantidad del interior.

Rubén

Hans-Otto Baral, 12-09-2017 07:58

Re : Hymenoscyphus? sobre piñas

Hi Ruben
I expected more disappearance of gutules but they are distintcly less than in your pics in water. The content distinctly decreased from about 5 to 3. This is because a lot of drops are vacuoles in fact.

Would it be possible that you send me the collection data? I want to mention your sample in my manuscript. The name of the species I changed to H. parasulphuratus, but this is a still unpublished name and possibly the genus Phaeohelotium is better.
Zotto

Rubén Martínez-Gil, 12-09-2017 08:52

Re : Hymenoscyphus? sobre piñas

Hola a todos.

Zotto, subo nuevas fotos que he hecho esta mañana también con KOH 5%.

Datos:

LA RIOJA: Lumbreras, zona conocida como Peña Yerre, 42° 4' 40" N - 2° 37' 52" W, 1550 m, sobre piñas de Pinus sylvestris semisumergidas en un riachuelo, 9-IX-2017, RM-2396.

Saludos

Rubén

Hans-Otto Baral, 12-09-2017 10:01

Re : Hymenoscyphus? sobre piñas

This is good thanks! Your pics have different sizes, i adjusted them to the same magnification then the shrinkage of the spores is better visible.

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