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Xylaria ? species
Pauline. Penna,
18-12-2017 12:24
These tiny Xylaria were found on a fallen branch of Prunus spinosa at the base of a hedge in Cornwall, UK.
Stromata 3-4 mm ,upright, many mucronate, crust 60microns thick. Stalks with sparse hairs.
Perithecia subglobose 500 microns wide. Ostioles papillate.
Asci 215-230 x 6 microns. Ascal apparatus urn shaped 5 x 3.
Ascospores 18-20 x 5-7 microns ellipsoidal not equilateral, germ slit nearly full length. Some asci 4 spored.
Anamorph present 2-3 mm with hairy stalk.
As the anamorph was present I thought it would be X. hypoxylon but the spores are too big.
Could it be X. arbuscular var. plenofissura ?
Help please.
Jacques Fournier,
18-12-2017 15:23
Re : Xylaria ? species
Dear Pauline,
your Xylaria could be either X. arbuscula var. plenofissura or X. xylarioides, which are very close. The small size is suggestive of the latter. Did you see a basal appendage on ascospores?
If you have enough material to share it, I would gladly study it to be perhaps more conclusive.
Best wishes,
Jacques
your Xylaria could be either X. arbuscula var. plenofissura or X. xylarioides, which are very close. The small size is suggestive of the latter. Did you see a basal appendage on ascospores?
If you have enough material to share it, I would gladly study it to be perhaps more conclusive.
Best wishes,
Jacques
Pauline. Penna,
18-12-2017 19:01
Re : Xylaria ? species
Hello Jacques
Thank you for responding to my post. I didn't look for appendages on the spores, should I do this with Indian Ink ?
I would be very happy to send you some stroma, there were quite a lot on the log.
Please let me know your address.
Best wishes
Pauline
Thank you for responding to my post. I didn't look for appendages on the spores, should I do this with Indian Ink ?
I would be very happy to send you some stroma, there were quite a lot on the log.
Please let me know your address.
Best wishes
Pauline
Jacques Fournier,
18-12-2017 20:14
Re : Xylaria ? species
the appendage is slighly refractive and can be seen in water. It stains light blue in blue ink and India ink is also a good option.
Thanks for sending the fungus, after gentle air-drying, to this postal address:
Jacques Fournier
"Las Muros"
F. 09420 Rimont
Please wrap it in paper when it is dry, avoiding plastic or aluminium sheet.
Jacques
Thanks for sending the fungus, after gentle air-drying, to this postal address:
Jacques Fournier
"Las Muros"
F. 09420 Rimont
Please wrap it in paper when it is dry, avoiding plastic or aluminium sheet.
Jacques
Pauline. Penna,
19-12-2017 10:08
Re : Xylaria ? species
Hello Jacques
I have looked at spores in Indian ink as I have no blue and can see no appendage. The ends of the spores do appear darker and thicker , which I hope shows on this image.
Dried material on the way to you shortly.
Many thanks
Pauline
I have looked at spores in Indian ink as I have no blue and can see no appendage. The ends of the spores do appear darker and thicker , which I hope shows on this image.
Dried material on the way to you shortly.
Many thanks
Pauline
