Mycosphaerella latebrosa (Cooke) J. Schröt., (an ascomycete)
IDENTIFICATION UNCERTAIN


27 Aug 2007 at OSGR: SD86 in Mid-west Yorks, England

Record Summaryon Sycamore leaf
Found asAnamorph
Date27 August 2007
Associated organismAcer pseudoplatanus
OS grid refOSGR: SD86
Lat/Lon54° 10’ N, 2° 10’ W
Vice CountyMid-west Yorks, VC no: 64
CountryEngland
Voucher27 Aug 2007[L]
(Please quote this in any queries about this record)

Notes:

Leaf spots: mostly inconspicuous and pale yellowish above, a few are dark brown and fill single areolae; showing pale brownish speckles on the underside where it fills a single areola or several together, with a single white curved tendril of spores extruding from the centre. Spore tendril sometimes capitate.

Conidioma hypophyllous.

Conidia: hyaline, narrowly cylindrical, 30-42/2-3µm; 3-septate with apical cell slightly longer, often curved, tapered; basal cell broadest; slightly constricted at septa.

There are apparently two Phloeospora on Acer pseudoplanus: Phloeospora pseudoplatani Bubak and the Phloeospora state of Mycosphaerella latebrosa. I can find no information on P. pseudoplatani so can’t decide between the two.

The following literature was used to identify this find:

macro-photographs
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photomicrographs
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