Accès membres

Mot de passe perdu? S'inscrire

13-06-2025 09:41

Aquatic ascomycete.
Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

14-07-2025 11:20

Une hélotiale sur Sphagnum palustre
Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

18-07-2025 23:03

Help with some conidia.
Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Una para ID 833
Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Sphaerulina cornicola versus Septoria cornina
Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

15-07-2025 13:27

literature request
Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Troposporella fumosum => Troposporella monilipes
Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Hypoxylon cf ticinense
Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Jackrogersella minutella VS Hypoxylon cohaerens var. microsporum
Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Olla aff. millepunctata (croziers +) on Rubus idaeus
Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

« < 1 2 3 4 5 > »
Tarzetta betulicola?
Stefan Jakobsson, 13-06-2020 21:22
Here a Tarzetta #1 growing with Betula and some Syringa, Spiraea, Ribes and 10 m away also some modest Picea, on soil at the verge of a garden. The width is maximum 21 mm and at the base with a stipe, thin and only one or two mm visible before being covered with soil. 8-spored, no croziers. The paraphyses are cylindrical, not enlarged at apex and rarely with some nobs or somewhat enlarged at septa, regularly branched but not close to the apex. The spores are

(18.3) 18.9 - 21.2 (21.9) × (10.1) 10.7 - 11.6 (12.0) µm
Q = (1.6) 1.7 - 1.9 (2.0) ; N = 32
Me = 20.1 × 11.1 µm ; Qe = 1.8.


Could this be T. betulicola ad int.? Southern Finland.


-----


A week ago this had only a few mature spores but then they were of a more fusoid shape than today.

  • message #63670
  • message #63670
Stefan Jakobsson, 13-06-2020 21:24
Re : Tarzetta betulicola?
This one #2 was growing alone some five meters away from the previous ones. It is very similar to #1 but somewhat bigger, 31 mm diam., a little bit lighter in colour and the spores are slightly bigger:

(19.4) 20.2 - 22.4 (22.7) × (11.3) 11.6 - 12.95 (13.0) µm
Q = (1.5) 1.7 - 1.86 (1.9) ; N = 34
Me = 21.4 × 12.2 µm ; Qe = 1.8


I did not observe any knobs on the paraphyses. Probably the same as #1?

  • message #63671
  • message #63671
Nicolas VAN VOOREN, 20-06-2020 19:42
Nicolas VAN VOOREN
Re : Tarzetta betulicola?
Dear Stefan,
T. betulicola is a provisional name, just a hypothesis within the T. catinus/pseudocatinus complex. Your data may correspond to this "species" based on the ecology, spore shape and size. A DNA analysis is required to confirm.