Accès membres

Mot de passe perdu? S'inscrire

04-04-2025 11:56

Edvin Johannesen Edvin Johannesen

These 0.2-0,4 mm diam. flat to slightly convex, gr

03-04-2025 15:33

Tomaz Vucko Tomaz Vucko

Hello! I found an interesting dothideomycete in a

03-04-2025 21:31

Francois Guay Francois Guay

Hi, I found this interesting ascomycete on incuba

03-04-2025 12:44

Castillo Joseba Castillo Joseba

Me mandan en matgerial seco de Galicia (España),Â

03-04-2025 18:26

Lennert Gees

Hello there!I found this species on dung of an unk

03-04-2025 16:45

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España), 

01-04-2025 23:18

Yanick BOULANGER

BonsoirRécolté par un ami sur dans un tas de bra

29-03-2025 09:08

Martine  Vandeplanque Martine Vandeplanque

Bonjour.J’ai essayé d’étudier un Daldinia.Qu

30-03-2025 10:24

Gonzalez Garcia Marta

Good morning, I would like to know the opinion of

01-04-2025 10:35

Yanick BOULANGER

BonjourSur bois très pourriApothécie 0,2 - 0,5 m

« < 1 2 3 4 5 > »
Hymenoscyphus lutescens ??
Casares Pablo, 01-08-2011 16:22
Hello. I'm reading this forum for the first time and to begin I send a few photos of a specimen collected on wood of Ilex aquifolium (with mosses). Could it be Hymenoscyphus lutescens? I don´t have bibliography for this species, but I´ve read that his spores are minor that H. calyculus.

Apothecia cup shaped to disc shaped of 2 mm across, stipitate, hymenium and outer surface yellow or pale yellow.

Asci with crosiers, unitunicate-inoperculate, with blue apical ring in IKI, 115-122 x 8,5-10 µm, in water, from fresh material and 1000x.

Spores fusiform-allantoid, smooth, with guttules, 14.9 [16.3 ; 17.3] 18.7 x 4.2 [4.7 ; 5] 5.5 µm; Q = 2.8 [3.3 ; 3.6] 4.1 ; N = 20 ; C = 95%; Me = 16.82 x 4.86 ; Qe = 3.48, in water, from fresh material and 1000x.

Paraphyses cylindrical, with abundant guttules, septate under guttulated zone.

Any idea??
Thanks
  • message #16021
  • message #16021
  • message #16021
  • message #16021
Hans-Otto Baral, 01-08-2011 16:33
Hans-Otto Baral
Re : Hymenoscyphus lutescens ??
Hi Pablo

H. lutescens is a species of coniferous substate, I know it from cones. Your fungus has distinctly scutuloid spores (apex recognizable, with lateral protrusion), at least partly, a feature never seen in H. lutescens. Also the oil content is lower in H. lutescens.

I think it fits well in H. subferrugineus, a taxon very close to H. calyculus. A plurivorous species, especially abundant in montaneous areas.

The H. calyculus group has apothecial stipes usually longer than wide, whereas H. lutescens is a member of the H,. epiphyllus group, which has the stipe not longer than wide. How is the stipe in your specimen?

Zotto
Casares Pablo, 01-08-2011 18:19
Re : Hymenoscyphus lutescens ??
Really. The stipe measures are 1,3-1,7 x 0,5-0,6 mm.
It is collected in Picos de Europa last week.
Is it possible that it grows on the wood of Ilex aquifolium?

Thanks Zotto

Hans-Otto Baral, 01-08-2011 20:32
Hans-Otto Baral
Re : Hymenoscyphus lutescens ??
That is well possible. The species was recorded even on Picea, also Ribes alpinum, Fagus, Crataegus, Corylus etc.

Zotto