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
Orange asco on Rubus leaves
Enrique Rubio,
18-07-2012 19:39
Hi to everibodyWe have collected on previous years leaves of Rubus ulmifolius these strange orange to yellowish ascomata arising of veins and petioles. Apothecia are gregarious, very small, up to 200 microns, and they are barrel shaped, columniform, later substipitate, turbinate and subcupuliform.
No hairs or another piliform structures we have seen in the margin or the excipulum.
Ascospores are filiform and up to 3-septate at maturity. Asci IKI b, croziers unknow. The paraphyses have allways some refractive vacuoles at their apices. Excipulum maybe with textura porrecta.
We don't know what genus agrees with our collection. Can you help us?
Many thanks again
Enrique
Hans-Otto Baral,
18-07-2012 20:26
Re : Orange asco on Rubus leaves
Hi Enrique
wonderful. Thanks to my stay in Sheffield last year I know this fungus which Jens collected on Rubus leaves. No wonder that it seems to have been overlooked perviously, but I did not so far check much the literature.. At least in my database there is nothing on Rubus/Rosa that has such spores.
This would be a good candidate to publish in a short article like Fungal Planet, but the problem is the genus. We think it is a Vibrissea, but maybe the excipulum is too different, also the VBs in the paraphyses are extraordinary. Pocillum would be another option.
Maybe Jens can provide us with his nice macro?
Zotto
Zotto
wonderful. Thanks to my stay in Sheffield last year I know this fungus which Jens collected on Rubus leaves. No wonder that it seems to have been overlooked perviously, but I did not so far check much the literature.. At least in my database there is nothing on Rubus/Rosa that has such spores.
This would be a good candidate to publish in a short article like Fungal Planet, but the problem is the genus. We think it is a Vibrissea, but maybe the excipulum is too different, also the VBs in the paraphyses are extraordinary. Pocillum would be another option.
Maybe Jens can provide us with his nice macro?
Zotto
Zotto
Enrique Rubio,
18-07-2012 20:38
Re : Orange asco on Rubus leaves
Thank you, Zotto. I I had thought that it could be a Vibrissea, but the excipulum is too different (as you say). Maybe Pocillum is better, at least while remain like so.
We think the excipulum is a bit gelified
Cheers
Enrique
We think the excipulum is a bit gelified
Cheers
Enrique