Accès membres

Mot de passe perdu? S'inscrire

05-11-2024 10:35

Juuso Äikäs

These pale-yellow fruitbodies were growing on core

03-11-2024 17:36

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

04-11-2024 22:58

B Shelbourne B Shelbourne

• Both Erysiphe and Phyllactinia species reporte

04-11-2024 20:28

Malcolm  Greaves Malcolm Greaves

A small group of Scutellinia found on a rotting lo

04-11-2024 17:32

Yves Antoinette

Bonjour, je pense qu'il peut s'agir de Trichoderma

03-11-2024 07:27

Juuso Äikäs

This tiny (0.2 mm wide) brown cup fungus was growi

02-11-2024 16:34

B Shelbourne B Shelbourne

• Host suggests Sawadaea bicornis or Phyllactini

01-11-2024 14:54

Rot Bojan

Can someone tell me more about this mushroom pleas

31-10-2024 22:25

Karen Poulsen

Hello, On half weathered Betula leaf, I noticed t

31-10-2024 21:42

Karen Poulsen

Hello, On last year's pine needles on the ground

« < 1 2 3 4 5 > »
Erysiphe quercicola on Quercus robur
B Shelbourne, 04-11-2024 22:58
B Shelbourne• Both Erysiphe and Phyllactinia species reported on the host.
• Several Erysiphe species with similar chasmothecial appendage morphology.
• This seems to be Erysiphe quercicola, chasmothecial appendages no longer than the diameter of the central body, downy patches amphigenous, and leaves not disfigured.

Habitat: Many leaves of Quercus robur with medium to large downy patches, on both sides of leaves, leaves not deformed, some small brown patches (may not be related), with Acer campestre and Crataegus cf. monogyna, around a hedge between a field and road, part of a large area of agricultural land being 'rewilded' (Knepp Estate), Low Weald, southern England, early November.

Chasmothecia: Apparently amphigenous, gregarious, initially yellow, then orangish, finally blackish.

Low magnification (20-40x): Chasmothecia sub-globose to globose, when mature with shortish appendages protruding from the equator, bases uninflated, apices appearing almost capitate due to a ball of dense branching, conidiophores not observed, some whitish lumps on mycelium.
  • message #80592
  • message #80592
  • message #80592
  • message #80592
  • message #80592