05-03-2026 10:07
Hulda Caroline HolteHello, I found and collected this species growing
05-03-2026 16:30
François BartholomeeusenDear forum members, On the 2nd of February 2026,
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
03-03-2026 20:34
Miguel Ángel Ribes
Good eveningThese small, amphora-shaped perithecia
01-03-2026 18:02
Francois Guay
I found this mystery Helotiales on an incubated le
28-02-2026 14:43
Alain GARDIENNET
A new refrence desired :Svanidze, T.V. (1984) Novy
Rutstroemia maritima?
William Slosse,
11-02-2026 22:15
Today, February 11, 2026, we found the following Rutstroemia in the drifting dunes at Bredene (Belgian coast).The habitat and substrate (dead leaves of Ammophila arenaria) suggest Rutstroemia maritima.
° Crystals present in the texture
° Croziers present
° Ascus tips euamyloid (in Melzer, my Lugol unfortunately appears to be degenerated...).
A sporee is currently being prepared to measure spores in water.
Can this observation be confirmed, or do further preparations need to be made/examined?
Thanks in advance,
William
Hans-Otto Baral,
11-02-2026 22:30
Re : Rutstroemia maritima?
The rather thin apical dome looks typical to me. Please do the spore photo in water to see living spores.
William Slosse,
12-02-2026 17:17
Re : Rutstroemia maritima?
And here are the spores from a sporee and measured in water:
(13.6) 14.1 - 17.8 (18.4) × (5.8) 6 - 7.5 (7.9) µm
Q = (2.2) 2.3 - 2.58 (2.6) ; N = 20
Me = 15.6 × 6.5 µm ; Qe = 2.4
(13.6) 14.1 - 17.8 (18.4) × (5.8) 6 - 7.5 (7.9) µm
Q = (2.2) 2.3 - 2.58 (2.6) ; N = 20
Me = 15.6 × 6.5 µm ; Qe = 2.4
Additional questions:
1. According to Index Fungorum, the current name is Clarireedia maritima. Is this nomenclature preferable?
2. Should this species be listed as Clarireedia cf maritima, or is it clearly described and recognized as such?
Thanks in advance,
William
Hans-Otto Baral,
12-02-2026 17:52
Re : Rutstroemia maritima?
This is a full match. The genus is a matter of taste. From DNA Clarireedia is a well-defined group, but from morphology I see hardly any chance to separate it from the core of Rutstroemia.
In my folders I use Clarireedia. There you can see the high similarity among the collections on Ammophila.
William Slosse,
12-02-2026 18:52
Re : Rutstroemia maritima?
Thx, Zotto!