Calonectria (?) on wood - Forum ASCOFrance

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Calonectria (?) on wood

Martin Bemmann, 05-07-2011 11:54

Bonjour,

last weekend I found these minute ascocarps (0.25 mm dm.) on an indet. piece of wood stained by Chlorociboria (some immature apothecia were present).
The spores are fusiform without clear septa and filled with small oildrops.
Is a determination possible without culture?

Best regards

Martin

Hans-Otto Baral, 05-07-2011 12:45

Re : Calonectria (?) on wood

Hi Martin

did you consider Tubeufia cerea? I suspect if you add Melzer or CB you will clearly see the septa.

Zotto

Martin Bemmann, 05-07-2011 12:53

Re : Calonectria (?) on wood

Yes indeed Zotto! This fits perfect!

Thanks,

Martin

erio camporesi, 07-07-2011 21:05

Re : Calonectria (?) on wood

Hi Martin and Zotto,
I think to have collected the same ascomycete, please see the attached photoes!

Erio

Martin Bemmann, 07-07-2011 22:54

Re : Calonectria (?) on wood

Ciao Erio,

most probably the same. I didn't find the time to check the septa, yet. Hope to do this at the weekend (in case something is left of the specimens....)

Cheers

Martin

erio camporesi, 08-07-2011 21:08

Re : Calonectria (?) on wood

Ciao Martin, Hi Zotto,

ok Martin.

Erio

PS: in the macrophoto the ascomycete on the left is an Orbilia.

Martin Bemmann, 08-07-2011 22:51

Re : Calonectria (?) on wood

Hyalorbilia I presume. There were also some on my collection but they were vanished the next day... :-(

Cheers,

Martin

Martin Bemmann, 09-07-2011 00:16

Re : Calonectria (?) on wood

And here (as Zotto had predicted) the septa of the spores visible in CB.

Cheers

Martin

erio camporesi, 09-07-2011 23:59

Re : Calonectria (?) on wood

Grazie mille Martin, thank you very much Martin

Erio

erio camporesi, 10-07-2011 21:25

Re : Calonectria (?) on wood

Hi Martin,
is it possible to locate the Hyalorbilia with these microphotoes?

Erio

Hans-Otto Baral, 10-07-2011 21:41

Re : Calonectria (?) on wood

Hi Erio

Clearly an Orbilia (because of bifurcate ascus base and capitate paraphyses), and obviously O. eucalypti (= O. alnea, = O. coccinella s. auct.)

Zotto

erio camporesi, 10-07-2011 21:43

Re : Calonectria (?) on wood

Hi Zotto,
thank you very much.

Erio

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