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01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

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En tallo de herbaceas 1102
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me mandan el material seco de Galicia (España) 

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Help with a Pleosporal.
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hymenoscyphus albidus
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BonjourRécolté sur une brindille au fond d'un fo

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Synnemata on herbaceous stem
Stefan Blaser, 31-07-2013 09:13
Hello everybody

I'm trying to identify these rather conspicuous synnematous Hyphomycetes. Does anybody have a hint for a Genus or even a Species?


Habitat: On dead herbaceous stem (probably Adenostyles)


Description: Synnemata with a black Stipe and a brownish head (somewhat slimy when wet, consisting of conidia in chains). Size 1.5-2 x 0.5 mm.


The conidia are produced in long, branched chains (>100 µm long). Single conidial cells usually 8-9 x 2-2.5 µm, hyaline. Few single conidia visible.


Thanks a lot for any comments


Stefan

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  • message #24612
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  • message #24612
René Dougoud, 31-07-2013 12:00
Re : Synnemata on herbaceous stem
Cher Collègue,

Il s'agit de la forme conidienne Heteropatella Fuckel. Sur Adenostyles, croit le teleomorphe Heterospaeria compositarum (Rehm) Hönel.

Voir photos

Amitiés

René
  • message #24615
  • message #24615
Stefan Blaser, 31-07-2013 13:04
Re : Synnemata on herbaceous stem
Cher René

Merci bien pour cet identification vite. A "Swissfungi" Il y a deux entrées pour Heterosphaeria compositarum et pour H. lojkae. Mais c'es synonyme, n'est ce pas?

Cordialement
Stefan
René Dougoud, 31-07-2013 14:50
Re : Synnemata on herbaceous stem
Voià ce que j'ai trouvé chez CABI


Current Name:
Mycomicrothelia lojkae (Rehm) You Z. Wang, Aptroot & K.D. Hyde, Fungal Diversity Res. Ser. (Hong Kong) 13: 100 (2004)


Synonymy:
Amphisphaeria lojkae Rehm, Annls mycol. 4(3): 261 (1906)
Heterosphaeria compositarum (Rehm) Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 127: 573 (1918)
Heterosphaeria lojkae (Rehm ex G. Winter) J. Schröt., in Cohn, Krypt.-Fl. Schlesien (Breslau) 3.2(1–2): 160 (1893) [1908]
Heterosphaeria patella f. compositarum Rehm, Ber. bayer. bot. Ges. 13: 164 (1912)
Heterosphaeria patella var. lojkae (Rehm) Sacc., Syll. fung. (Abellini) 8: 776 (1889)
Pyrenopeziza lojkae Rehm, Ascomyceten: no. 15a (1870)
Pyrenopeziza lojkae Rehm ex G. Winter, Flora, Jena 30: 509 (1872)

Ma détermination date de 1997 !!! Je ne dispose pas de la publicartion de Y.-Z Wang. Le cas échéant je suis intéressé par une copie.

Amicalement

René