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Hypoxylon fuscum


Hypoxylon fuscum
Photo Information
Copyright: Felipe Mateo and Cristina (extramundi) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2047 W: 351 N: 4178] (12764)
Genre: Fungi
Medium: Color
Date Taken: 2006-11-01
Categories: Fungi
Camera: Canon EOS 350D, Canon EF-S 60mm f/2.8 Macro, Digital ISO 100
Details: Tripod: Yes
Photo Version: Original Version, Workshop
Theme(s): Setas de Galicia - Mushrooms from Galicia II [view contributor(s)]
Date Submitted: 2006-12-24 4:37
Viewed: 755
Points: 16
[Note Guidelines] Photographer's Note
Hypoxylon fuscum

Here I post 3 shots of this ascomycete fungus, from an early stage on the first picture, to a mature stage in the last one, where the black stains caused by spore dispersion can be seen.

Stromata pulvinate on bark, rounded, at times coalescent, 2-5 mm diam x 0.5-2 mm thick, or effused-pulvinate on decorticated wood, 15-60 mm long x 3-10 mm broad x 0.4-2 mm thick, with inconspicuous perithecial mounds; surface vinaceous purple to dark vinaceous or vinaceous brown, at times wrinkled between perithecial mounds; yellowish granules beneath surface with KOH-extractable pigments amber, luteous to citrine, olivaceous or dilute umber; the tissue below the perithecial layer brown to dark brown, 0.1-1.5 mm thick.

Perithecia spherical to obovoid, 200-380 µm diam x 250-400(-600) µm high.

Ostioles lower than the stromatal surface, at times, on mature stromata, surrounded by a ring of white substance 40-60 µm diam.

Asci 105-170 µm total length x 7-10 µm broad, the spore bearing-parts 65-108 µm long, the stipes 35-90 µm long, with apical ring discoid, amyloid, 0.8-1.5 µm high x 2.8-3.5 µm broad.

Ascospores brown to dark brown, ellipsoid-inequilateral with narrowly rounded ends, 11-16 x 5-8 µm ( M = 13.2 x 5.8 µm), (on Carpinus betulus 9.5-12.2 x 4-6.2 µm, M = 11.4 x 5.2 µm), with slightly sigmoid to sigmoid spore-length germ slit; perispore dehiscent in 10% KOH, smooth; uniseriate to infrequently biseriate in the ascus.

Anamorph in nature buff to honey, velvety, occurring at first stages of stromatal development, more rarely on old stromata. Conidiogenous cells hyaline, smooth, 20-25 x 2-2.5 µm. Conidia ellipsoid, hyaline, 3.5-5.5 x 2-3.5 µm. The conidiogenous structure is Virgariella-like.

Habitat: on bark or decorticated wood of various trees, usually members of Betulaceae (Alnus, Betula, Carpinus and Corylus), very common on dead standing stems of Corylus avellana. Also recorded during this study on Acer campestre, Frangula alnus, Prunus spinosa, Rhamnus catharticus and Salix caprea.

Known distribution: reported from North temperate areas (Europe, North America) and from tropics as well (Guyana, Philippines, Taiwan) (Ju & Rogers, 1996).

I found this complete info HERE.

Hope you like!

1st.: F:9 - 1.6 sec. - Manual exposure - Tripod
2nd.: F:11 - 1.3 sec. - Manual exposure - Tripod
3rd.: F:18 - 1.8 sec. - Manual exposure - Tripod
Necipp, carper, petrudamsa, RAP, red45 has marked this note useful
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Critiques [Translate]

Another impressive group photo macro's nice lighting that shows off good detail interesting subject TFS rgds Necip.

Hi you two,
ääähhhh, they don't look very delicious ;-)
But very interesting, I always wonder where you find such funghis. Thanks.
Yesterday I saw a tree with unidentified things at the top of it. Than I catched my camera to make a shot to look closer - they looked like funghis and I said to Stephan - that's a shot for Felipe, at least I have a funghi-shot for him - and - these were only fir-cones, sorry.
I post them for you as a WS so perhaps you understand why I thought this would be funghis.
Bye and have wonderful Christmas-days, all the best
Sabine - wishnugaruda

Felilpe master of the mushrooms here on TN.
I wish you and your family a very good Cristmas and a fine days. About the photo, It's always a pleasure to look too your photo's,
gr. jaap

hello Felipe,

I,m again amazed by your macro and micro shots with fungi. I mat this specie this year too. I also met Hypoxylon fragiforme, on beech bark. I just don't have enough experience nor good enough gear to make such photos like you! ;-(
Check again my last mix of mushrooms. I just posted in the workshop section a large picture of Mycena epypterigia.

Cheers and Feliz Navidad!
Petru

  • Great 
  • hester Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1479 W: 18 N: 3030] (11110)
  • [2006-12-24 10:10]

Hi

You certainly find some great funghi. Excellent details, POV and colours. Lovely presentation

TFS

Karan

Hola Felipe y Cristina,
Excelente toma, casi se ven los peritecios mejor que con lupa. Sin tiempo para más.
Mis sinceros y mejores deseos para vosotros y vuestros seres mas queridos. Un cordial saludo

  • Great 
  • RAP Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2524 W: 345 N: 2373] (7405)
  • [2006-12-24 15:29]

Otra de tus instructivas presentaciones, sin la pompa de algunas, ni los llamativos colores de otras, pero siempre interesantes.
Me encanta como siempre la composición de imágenes y más observando el maravilloso Workshop complementario.
Muchas Felicidades!.
Ricardo

  • Great 
  • red45 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2816 W: 75 N: 7977] (26973)
  • [2006-12-25 5:29]

Merry Christmas Felipe and Cristina!

Another perfect presentation of beautifull but unknown to most fungus. I like its camouflage colours and textures of surface. Great triptich!

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