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14-11-2025 18:31

Lothar Krieglsteiner Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

14-11-2025 16:26

Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

12-11-2025 21:47

ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Viktorie Halasu Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

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Orbilia carpoboloides ?
Ethan Crenson, 17-12-2019 05:50
Hello everyone,

I collected this in Central Park NYC yesterday.  I'm not sure of the substrate, but there are many old Elms in the area. It appears to be growing directly on the wood substrate, but also growing on a pyrenomycete which could be Nitschkia.  It looks a bit like Orbilia carpoboloides, though the spore dimensions are a bit off. Orange apothecia with a whitish crusty margin growing to about 1mm at the largest.  Asci are 57-70 x 4.5-5µm.  IKI-  Spores are almost seed shaped with long, worm-like bodies running near the narrow end.  7-9 x 3-3.5µm.  Paraphyses are bulbous at the ends with a narrow cap about 4µm at the widest point.  I can provide more images if necessary. Orbilia carpoboloides or maybe Orbilia flavidorosella? 

Thank you in advance.

Ethan
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Hans-Otto Baral, 17-12-2019 08:41
Hans-Otto Baral
Re : Orbilia carpoboloides ?
Yes, it is O. carpoboloides (= O. piloboloides), and it is hardly believable that the long-spored samples reported recently are the same. But we found all intermediate collections as well.

The substrate really looks like elm. Could you please tell me the date of collection?

O. flavidorosella has only 1.8-2 µm wide spores and narrower paraphyses.
Ethan Crenson, 17-12-2019 15:32
Re : Orbilia carpoboloides ?
Thank you so much!  This is new for New York City as far as I know at the moment.  Is O. carpoboloides restricted to Ulmus or does it occur on other substrates?  I'm curious also if there is a relationship with the pyrenomycete (Nitschkia perhaps) which it is growing on/with. 

The information about the collection... December 15. 2019, Central Park just inside the East 76th Street entrance at 5th Avenue. An ascomycete with a very posh address. A block from the French Consulate.
Hans-Otto Baral, 17-12-2019 16:37
Hans-Otto Baral
Re : Orbilia carpoboloides ?
We know samples from Canada and eastern USA, but not for entire New York State and adjacent US states. Ulmus  is a main substrate but there is also Salix, Cercis, Morus and various other special hosts, eve Passiflora.