BioImages: The Virtual Field-Guide (UK)

Unidentified Aposphaeria (Unidentified Aposphaeria Coelomycetes)

Date 18 December 1999
OS grid ref SU57
Lat/Lon 51° 30' N, 1° 10' W
Location Vice County: Berks, VC22, England
Voucher 18/12/1999[D]
(Please quote this in any queries about this record)
Stage or state Anamorph
Record Summary on bleached patches on fallen Sweet Chestnut leaf
Associated organism: on bleached, fallen leaf of Castanea sativa
Identification Notes: Round black pycnothyria 0.15-0.25mm diam, gregarious on upper surface of bleached patches on rather wet fallen leaf.
Swollen and very shiny (like glass) when wet, drying flatter with raised central pimple and less shiny.
Conidia: 3-5/1µm, cylindric, tapered at one end and probably septate.
Conodiophores forming a palisade.
Darkened ring round ostiole.

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