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13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

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Appendages and sheaths
Jac Gelderblom, 23-08-2013 13:29
Dear friends

The keys of Shoemaker on Ophiobolus and Phaeosphaeria make use of "appendages" (Ophiobolus) and "sheaths" (Phaeosphaeria) for sporefeatures. I usually make my mounts in water and the I never see appendages nor sheaths. Should I use other reagentia to see them?
Who can give me advise in this matter?

Greetings

Jac Gelderblom
Francisco Calaça, 23-08-2013 13:53
Francisco Calaça
Re : Appendages and sheaths
Hello Jac,
usually, only the direct mounting in water, it's difficult to see the pageants gelatinous ("appendages" and "sheaths"). I, usually, use some reagents that facilitate the visualization, cuz they're hyaline, microscopy common is really complicated. I use the congo red (works with Podospora species), is reasonably good. Another option is the indian ink. Sometimes lactophenol is good.
Stay fine,
Francisco Calaça.
Yannick Mourgues, 23-08-2013 13:55
Yannick Mourgues
Re : Appendages and sheaths
To see gel sheaths, I use Indian Ink.
Y
Joop van der Lee, 23-08-2013 19:31
Joop van der Lee
Re : Appendages and sheaths
Most of the time appendages break off easily when spores are mature. When examening these species in water I do not use much pressure on the deck glass so it gives you the opportunity to look at young spores still in the ascus where appendages are still connected. When you are lucky you might also see them on mature spores but be carefull not to put too much pressure on the deck glass.
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  • message #24887
  • message #24887
Jac Gelderblom, 27-08-2013 15:21
Re : Appendages and sheaths
Dear friends

Thanks for your advices.
I made mounts of Ophiobolus niesslii in water and indian ink and the and the caps at the end of the spores ware clearly visible in indian ink.

Greetings   

 Jac
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  • message #24923