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04-12-2023 08:32


Bonjour, récolte réalisée au sol dans un parc,

01-12-2023 21:54

Marian Jagers Marian Jagers

Does anyone recognize this species? Apothecia in

04-12-2023 10:01

François Bartholomeeusen

Dear forum participants, On a thin twig of Myrica

03-12-2023 19:21

ruiz Jose antonio

Hola a todos, en un talud cercano a un riachuelo,

28-11-2023 23:10

Villalonga Paco

On basic soil in humid bank, Teruel, Spain, around

02-12-2023 21:21

Elisabeth Stöckli

Bonsoir, Récolte en milieu incendié, apothécie

25-11-2023 14:49

Kees van Oorde Kees van Oorde

Very small fruiting bodies on affected leaves. Fou

30-11-2023 14:33

Béatrice Senn-Irlet

alll issues of Mycologia Helvetica (1983-2000) are

28-01-2014 10:50

Gernot Friebes

Hi,I'm looking for these three standard references

25-11-2023 18:14

Danny Newman Danny Newman

higher resolution images available at inaturalist.

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Charles Aron, 30-09-2023 20:23
Charles AronHi All,

On 11th September I was surprised and excited to find an Arpinia in a spruce plantation on Anglesey, North Wales. A description is given below:

Arpinia cf luteola, Cae Brych Forestry, 11/9/23
Ascospores with two guttules. Ellipsoid. Thick-walled.
10.2x6.6, 10.2x6.2, 11x6.4, 11.3x6.2, 10.8x7, 10.6x6.6, 10.1x6.2, 11.2x6.2,
Paraphyses mostly slightly bent or curved at apices. Slightly enlarged to about 3/3.5. Filled with guttules.
Fb 19mm, stipe 12mm. Cup shallow, 16x12mm, lobed with an incurved margin. Excipulum slightly paler & with a pink tinge. Becoming markedly pinkish on damage. Markedly furfuraceous. Stipe pale, downy.
Habitat. In litter of Picea.
Excipular warts consisting of thin-walled globose or subglobose cells 20-30 across.
Asci X400: 56x4, 69x4, 97x4, 60x3.7, 61x4, 63x3.6, 63x3.9, 65x3.9, 63x4.1,

Paul Cannon kindly confirmed the ID of Arpinia as a new genus to Britain and also sent me Hohnemeyer's 1988 keys key file:///C:/Users/User/Downloads/Hohmeyer%20(1988)%20Arpinia%20(1).pdf
I am a bit torn between microspora, which has a similar spore width, and luteola var. pallidorosea which has narrower spores than my collection (5-6) but agrees in every other respect with A. luteola var. pallidorosea. We were both wondering if anyone in the forum has more experience with these elusive taxa. I intend to have the material sequenced.

Best wishes,


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Charles Aron, 05-10-2023 10:46
Charles Aron
Re : Arpinia
No comments on the Arpinia?
Hardware Tony, 07-10-2023 00:22
Hardware Tony
Re : Arpinia
Hi Charles,

I am not anywhere near an expert in this genus but found this research article from Anatolian J. of Botony by Y. Uzum.  Have you seen this? It suggests A. microspora has not been found in Europe and differs from A. luteola by a whitish hymenia. Measurements look all acceptable except a very marginally difference on the width for A. luteola. 
See what you think if not seen this article.
See you in Scarborough ... !!
Nicolas VAN VOOREN, 09-10-2023 09:08
Re : Arpinia
Arpinia collections are rare. The taxonomy of this genus needs a deep revision, especially with vital characters. Molecular data will be useful to better understand the relationships between the known taxa.
Charles Aron, 09-10-2023 19:03
Charles Aron
Re : Arpinia
Hi Tony and Nicolas, 

Many thanks for your comments and info. Yes, it is close to luteola apart from the slight niggle re spore width. The material has been dried and I definitely intend to have it sequenced so maybe that will shed a bit more light on this. 

Best wshes,