25-11-2025 14:24
Thomas Læssøehttps://svampe.databasen.org/observations/10490522
25-11-2025 11:03
Mick PeerdemanHi all,One of my earliest microscopy attempts, so
24-11-2025 15:23
Arnold BüschlenHallo, auf einer offenen Kiesfläche am Rande ein
23-11-2025 11:16
Bohan JiaHi, I found small discs growing on dead stem of
21-11-2025 10:56
Christopher Engelhardt
Very small (~0,5 mm) white ascos, found yesterday
Leucostoma on Prunu sp.
Enrique Rubio,
22-04-2013 16:48
Hi to all
Could this fungus be Leucostoma persoonii or some close species of this genus? It grew on Prunus sp. branches at 1000 m ofaltitude. I don't know its Cytospora anamorphic state.
Do you know some modern keys of Leucostoma?
Thanks again
Vera Hayova,
24-04-2013 15:58
Re : Leucostoma on Prunu sp.
Hello Enrique
Thanks for drawing my attention to this record. Yes, it is Leucostoma persoonii. Its anamorph, Cytospora leucostoma, from otuside looks quite similar but with a single ostiole (rarely with two). The anamorph normally can be found in a separate stroma (unlike in L. cinctum where both stages usually develop in the same stroma, as you may remember we have already discussed here). A third species quite common on Prunus s.l. (incl. Cerasus & Padus), L. auerswaldii, differs from L. persoonii by larger spores and stroma configuration.
As far as I know there is no recently published key for all species of Leucostoma. Although it might be one day........ However, for example for Leucostoma species reported from Bulgaria there is a key in the monograph of Dimitar Stoykov 'Diaporthales of Bulgaria' (2012).
Regards
Vera
Thanks for drawing my attention to this record. Yes, it is Leucostoma persoonii. Its anamorph, Cytospora leucostoma, from otuside looks quite similar but with a single ostiole (rarely with two). The anamorph normally can be found in a separate stroma (unlike in L. cinctum where both stages usually develop in the same stroma, as you may remember we have already discussed here). A third species quite common on Prunus s.l. (incl. Cerasus & Padus), L. auerswaldii, differs from L. persoonii by larger spores and stroma configuration.
As far as I know there is no recently published key for all species of Leucostoma. Although it might be one day........ However, for example for Leucostoma species reported from Bulgaria there is a key in the monograph of Dimitar Stoykov 'Diaporthales of Bulgaria' (2012).
Regards
Vera
Enrique Rubio,
24-04-2013 16:54
Re : Leucostoma on Prunus sp.
Many many thanks, Vera.
Thank you for your kindly help
Thank you for your kindly help