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05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

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Hypoxylon multiforme (Fr.) Fr. (?)
Esquivel-Rios Eduardo, 05-03-2013 20:53
Hi all.

Found in dead wood.

Stromata pulvinate, effused at base to slightly constricted, usually coalescent,25 mm diam x 2-5mm thick; surface black-grey. Perithecia spherical to obovoid, 500-700 µm diam x 600-700 µm high, discretely surrounded by a carbonaceous stromatal layer.Ostioles papillate, conical, black, sometimes at the centre of a discoid depression 150-230 µm diam.Asci 150-185 µm total length, the spore bearing-parts 64-86 µm long x 5.5-6 µm broad, the stipes 80-120 µm long, with apical ring discoid, amyloid, 0.8-1.2 µm high x 2-2.8 µm broad.Ascospores light brown to brown, ellipsoid-inequilateral, frequently crescent-shaped, 8.8-10.3 x 3.7-4.9 µm with faint straight germ slit less than spore-length.
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Thomas Læssøe, 06-03-2013 10:02
Re : Hypoxylon multiforme (Fr.) Fr. (?)
Hi there

You forgot to tell when, where and on what :-)

cheers

Thomas