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21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

22-12-2025 00:47

Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

21-12-2025 21:40

Isabelle Charissou

Bonjour, j'aimerais connaitre les références de

21-12-2025 21:31

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

21-12-2025 21:31

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

20-12-2025 23:08

Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

21-12-2025 01:54

David Chapados David Chapados

Hi,Would it be possible to find the species with t

20-12-2025 15:47

Mirek Gryc

Hi.These grew on pine wood that was heavily covere

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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.
  • message #24887
  • 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
  • message #24923
  • message #24923