BioImages: The Virtual Field-Guide (UK)

Pleospora allii (Rabenh.) Ces. & De Not., 1863 (an ascomycete)

Date: 13 June 2007 (Date may be unnatural as specimen was cultured, reared, grown or otherwise kept in captivity)
OS grid ref: SW62
Lat/Lon: 50° 0' N, 5° 20' W
Location: Vice County: West Cornwall, VC1, England
Voucher: 13/06/2007[K]
(Please quote this in any queries about this record)
Stage or state: Imperfect stage
Record Summary: Stemphylium state on dead lower leaves of Spurrey after keeping in fridge for a week.
Associated organism: on dead leaf of Spegularia
Identification Notes: Stemphylium state.

Conidia: 55-85/13-23µm, brown, verruculose, cylindric or slightly broader below, muriform, usually constricted at 3 major septa; apex rounded, sometimes with small pale or hyaline, oblique protruberance.

Conidiophore: cylindric, pale grey-brown, septate, apex dark banded, swollen, collapsing to form a cup after conidium discharged, often swollen and/or dark banded below.

Upper leaves were infected with Albugo lepigoni, the sporangia of which contaminated the microscope preps.

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