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Philippe PELLICIERSur branche de mélèze (Larix) près de la neige,
Orbilia: confirmation
Nicolas VAN VOOREN,
16-04-2013 16:32
Here is a collection of Orbilia crenatomarginata to be confirmed.Collected on rotten trunk of Populus, on soil.
Ectal excipulum of t. globulosa with cells 6-21 µm Ø. Asci with an elongated base, 20-28 x 2.8-3 µm. Paraphyses about 1.5 µm Ø, with glassy process at the top (0.5~1 µm thick). Spores curved, often like an elongated S, no spore body seen, 6-8 x 0.3-0.5 µm. Dark subiculum present.
Hans-Otto Baral,
16-04-2013 16:39
Re : Orbilia: confirmation
Hi Nicholas
there are some strange things with this fungus. Could you provide a closup of an apothecium for the margin? No teeth? Also a microphoto of the margin, best as a section. Any glassy processes there?
As the specimen is fresh the spores hould contain a spore body. The lower spores whould be inversely oriented.
The glassy substance above the paraphyses stain turquoise in CRB or red-brown in IKI, and represent exudate, not glassy wall material.
Was it on wood or bark? Could you supply me the location and date?
Zotto
there are some strange things with this fungus. Could you provide a closup of an apothecium for the margin? No teeth? Also a microphoto of the margin, best as a section. Any glassy processes there?
As the specimen is fresh the spores hould contain a spore body. The lower spores whould be inversely oriented.
The glassy substance above the paraphyses stain turquoise in CRB or red-brown in IKI, and represent exudate, not glassy wall material.
Was it on wood or bark? Could you supply me the location and date?
Zotto
Hans-Otto Baral,
16-04-2013 19:08
Re : Orbilia: confirmation
I just evaluated the size from your drawing of 3 spores: I arrive at 6.2-7 x 0.6 µm
Zotto
Zotto