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01-05-2025 20:11

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, today I have collected a tiny ascomycete g

27-04-2025 15:54

Martin Bemmann Martin Bemmann

Can somebody provide this article from a Leningrad

03-05-2025 18:35

Edmond POINTE Edmond POINTE

J'ai  connu Michel DELPONT au début de ma passio

29-04-2025 09:13

Louis DENY

Bonjour forumVosges du sud, ballon d'Alsace altitu

04-05-2025 11:37

Andreas Gminder Andreas Gminder

Hello,yesterday I took an attached branch of Querc

02-05-2025 08:41

Tony Moverley

A Monilinia type fungus has recently been collecte

02-05-2025 08:45

Isabelle Charissou

Bonjour, existe-t-il un pdf d'un Glossarium polygl

03-05-2025 12:43

Matthias Reul Matthias Reul

Hi together, Maybe someone has an idea about this

01-05-2025 11:25

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

01-05-2025 21:07

Isabelle Charissou

Bonjour, j'aimerais pouvoir consulter l'article s

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On Yucca filamentosa - conidia like Robillarda, but aseptate
Ethan Crenson, 08-05-2025 18:32
Hello all,

I was looking at leaves of Yucca from a NYC coastal park recently and encountered conidiospores that looked interesting to me.  They are associated with pycnidia which form on the leaves, but it is likely that the pycnidia are a separate anamorphic taxon with brown conidia.

Hyaline conidiospores with a lot of oil content. Usually five or more hair like projections extending from one end of the conidia.  35-50 x 10.8-12.1µm.  They bear a resemblance to Robillarda species, but that genus has 1-septate conidia, I think.  Pestaloziella spp. are also similar, but have hair-like projections that branch, while my collection has individual hair-like projections. 

Can anyone recommend a genus?  Thanks in advance.

Ethan
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Angel Pintos, 08-05-2025 18:57
Angel Pintos
Re : On Yucca filamentosa - conidia like Robillarda, but aseptate
Hello Ethan,
"It may be Kellermania yuccifolia, found on leaves of Yucca filamentosa.Best wishes.
Angel
Ethan Crenson, 08-05-2025 19:31
Re : On Yucca filamentosa - conidia like Robillarda, but aseptate
Hello Angel.  Thank you for your quick reply!  I was also considering Kellermania, but I was under the impression that the conidia had a single appendage.
Martin Bemmann, 08-05-2025 19:44
Martin Bemmann
Re : On Yucca filamentosa - conidia like Robillarda, but aseptate
Here are the figures from Nag Raj 1993 (attached), single celled conidia with multiple appendages...

Regards

Martin
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Angel Pintos, 08-05-2025 20:04
Angel Pintos
Re : On Yucca filamentosa - conidia like Robillarda, but aseptate
Thank you, Martin for the image.
In Nag Raj's description, it is mentioned that the conidium bears minute marginal frills, as it seems to be visible in your image 2.
Best wishes.Angel
Ethan Crenson, 08-05-2025 20:06
Re : On Yucca filamentosa - conidia like Robillarda, but aseptate
Kellermania yuccifolia it is!  Thank you both!

I see that Index Fungorum has Alpakesa yuccifolia as the current name. Has that name gained acceptance?