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09-01-2026 10:08

Orbilia posible aurantiorubra
Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

08-01-2026 21:22

Orbilia pilifera posible
Blasco Rafael Blasco Rafael

Hola, He recogido esta muestra de Orbilia sobre Re

07-01-2026 10:24

Pezicula sp. on indet. hardwood - 303870019
Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

07-01-2026 22:22

Tatraea sp. on indet. hardwood - 303452087
Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

07-01-2026 17:29

White tree-like anamorph on Populus
Marc Detollenaere Marc Detollenaere

Dear Forum,On a barkless Populus I found some smal

10-11-2021 17:33

anamorph Chlorociboria aeruginella
Riet van Oosten Riet van Oosten

Add-on topic http://www.ascofrance.com/forum/7059

07-01-2026 10:05

cf. Chaetospermum on Xylaria - 303631739
Danny Newman Danny Newman

cf. Chaetospermum on XylariaCosby Campground, Grea

06-01-2026 20:54

Gymnoascus ?
Thierry Blondelle Thierry Blondelle

Bonjour à tous et meilleurs voeux pour cette nouv

02-01-2026 17:43

Spores with a sheath
MARICEL PATINO

Hi there, although I couldn't see the fruitbody, I

04-01-2026 17:45

Pithya cupressina with large apothecia looking like P. vulgaris.
Stephen Martin Mifsud Stephen Martin Mifsud

I was happy to find these orange asmocyetes which

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Albotricha?
Stefan Jakobsson, 11-06-2021 23:14
On an old Typha latifolia on wet ground there were several kinds of small stipitate apothecia. One of them has a cream coloured disk, 350 µm wide. The spores are 12.3-14.1 × 1.9-2.4, almost without visible content. The hairs are tapering but with the apex easily collapsing and the ornamentation is of fairly regular small granules, very low towards the apex. Croziers missing. All measurements match Albotricha acutipila nicely, but I have never seen this kind of granulation on A. acutipila where I am used to seeing amorphous lumps. And Typha is not a grass.

I don't quite know what I should make of this. Suggestions are welcome!

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Hans-Otto Baral, 12-06-2021 09:15
Hans-Otto Baral
Re : Albotricha?
Although the paraphyses look empty, I guess that this species belongs to those Lachnums which turn reddish, because the hairs obviously contain VBs.

Without croziers I only know L. controversum and L. caricis. Did you measure the hair length?
Stefan Jakobsson, 12-06-2021 11:21
Re : Albotricha?
Yes, the length is more than 100. I did not find a matching Lachnum.
Hans-Otto Baral, 12-06-2021 11:41
Hans-Otto Baral
Re : Albotricha?
You don't have a macor and still fresh apos? I would look more for the VBs, do they also occur in the paraphyses? More hairs tips would be welcome, how do they look when collapsed?
Stefan Jakobsson, 12-06-2021 12:30
Re : Albotricha?
Here a few bad photos - unfortunately too much air bubbles. There are some few apos left, which I will have a look at later today. They were growing mixed with Psilachnum acutum.
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Hans-Otto Baral, 12-06-2021 16:09
Hans-Otto Baral
Re : Albotricha?
Yes, here the VBs are abundant in some basal hair cells. Hair length I found around 80-110 µm. Trapped air is a problem especially in rough-haired species. These VBs definitely exclude A. acutipila, besides the absence of crystals, but points to a Lachnum. No idea as yet.
Stefan Jakobsson, 12-06-2021 22:17
Re : Albotricha?
Unfortunately the small grazing beasts have done their job and the two apothecia I saw last night are now gone.

However, on another piece of Typha I found another Lachnum with more typical hairs. I think it could be Lachnum schoenoplecti even though it is not a perfect match with any of the three descriptions I could locate. No very big differences though. The spores are 15.3-20.6 × 1.8-2.3, asci 45-66 × 4.1-5.4 and the parafyses are rather narrow 69-94 × 2.8-3.8 µm. The hairs are up to at least 80 long and up 6 wide at the capitulum, with a few septa. New for me if I am right.

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Hans-Otto Baral, 13-06-2021 09:44
Hans-Otto Baral
Re : Albotricha?
This sounds reasonable. The species was also reported from Carex.
Stefan Jakobsson, 13-06-2021 11:41
Re : Albotricha?
Thank you!

In the mean time I found also Orbilia rectispora, which seems to be new north of Denmark.