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23-05-2026 23:53

Moreno Miriam

Bonjour ! Je travaille sur mon mémoire de master

23-05-2026 18:57

Sylvie Le Goff

Bonjour à tousRécolté sur une branchette de Sal

22-05-2026 14:44

Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

23-05-2026 11:44

Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

22-05-2026 21:35

Steve Clements

Bonjour, I expected this find on old wood on our

22-05-2026 18:12

Lothar Krieglsteiner Lothar Krieglsteiner

... in moist chamber from Portugal.As the fungus s

22-05-2026 20:08

Ethan Crenson

Hello all,  Yesterday in NYC I was visiting an e

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

20-05-2026 17:47

Margot en Geert Vullings

We found this Mollisia on dead Juncus stems mown l

22-05-2026 14:47

Gernot Friebes

Hi,superficial ascomata collected on bark of a liv

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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