17-10-2025 18:45
Riet van Oosten
Hello, Found by Laurens van der Linde, Oct. 2025.
23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
15-10-2025 16:39
Edvin Johannesen
These tiny (0.2-0.6 mm), white, pulvinate apotheci
03-10-2025 13:44
Riet van Oosten
Hello, Found by Laurens van der Linde on Populus
13-10-2025 19:05
Louis DENYBonjour forumSur tronc décortiqué de feuillu x,
11-10-2025 20:27
Marcel Heyligen
Found on a barked branch, 14 mm in diameter, of Ro
09-10-2025 22:14
S. RebeccaWe just had the Bavarian Mycology Conference in Au
10-10-2025 00:49
Ethan CrensonHello all, This was found last weekend on a hardw
Phragmotrichum chailletii
William de Jong,
16-01-2022 15:10
Found on a cone of Picea abies by Frans Ozinga in The Netherlands: see pictures.
Tiny black perithecia with yellow/brown conidia with longitudinal as well as transverse septa. Measurements: (29,0-)31,0-40,9(-42,0) x (19,0-)19,5x26,2(-26,4) µm; avg. 36,1 x 22,4 µm (n=18).
I'm pretty sure it's Phragmotrichum chailletii. Based on Kunze & J.C. Schmidt (1823), Mykologische Hefte 2: 84-87 and B.C. Sutton & D.K Sandhu, Phragmotrichum pini (W.B. Cooke) comb.nov. (1969), Transactions Britisch Mycololgical Society 42 (1), 67-71.
The conidia are versicoloured, 6-beaked, are frequently chained to each other in pairs of 3 or 4. although, my measurements are a bit longer and broader than in Sutton & Sandhu (24-35x14,5-20 µm).
Since this would be a new species for The Netherlands a confirmation of the identification would be great. Please let me know.
Best regards,
William
Björn Sothmann,
16-01-2022 15:12
Re : Phragmotrichum chailletii
Hi William,
I agree that this is Phragmotrichum chailletii. I am a bit suprised that this has not yet been found in the Netherlands. Here in Germany, it tends to be rather common.
Björn
William de Jong,
16-01-2022 15:17
Re : Phragmotrichum chailletii
Hi Björn,
Thank you for your reply and confirmation!
It could very well be that this species has been found before in The Netherlands, but apparently it is never documented officially.
Best regards,
William
Thank you for your reply and confirmation!
It could very well be that this species has been found before in The Netherlands, but apparently it is never documented officially.
Best regards,
William
Pierre Repellin,
16-01-2022 17:16
Re : Phragmotrichum chailletii
Très commun sur écailles de cones d'épicéa dans le Vercors (Isère)
William de Jong,
16-01-2022 18:42
Re : Phragmotrichum chailletii
Is there also more recent literature about this species?
Edit: Yes there is :) https://doi.org/10.3114/fuse.2020.05.04
(with the following measurement of the conidia: (25–)35–45(–50) × (18–)20–23(–25) µm)
Edit: Yes there is :) https://doi.org/10.3114/fuse.2020.05.04
(with the following measurement of the conidia: (25–)35–45(–50) × (18–)20–23(–25) µm)
Pavol Palo,
16-01-2022 22:06
Phragmotrichum-chailletii-0001.pdf
William de Jong,
17-01-2022 19:27
Re : Phragmotrichum chailletii
Thank you Pavol. From which publication is this?
Pavol Palo,
17-01-2022 19:36
Re : Phragmotrichum chailletii
Hi Wiliam
Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz .
Pavol
Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz .
Pavol
William de Jong,
17-01-2022 20:32
Re : Phragmotrichum chailletii
Thanks!