Septoria aegopodii (Preuss) Sacc., (an ascomycete)


6 Oct 2007 at OSGR: SU56 in Berks, England

Record SummaryPhloeospora state with immature pseudothecia on underside of Ground Elder leaves
Found asAnamorph
Date6 October 2007
Associated organismAegopodium podagraria
OS grid refOSGR: SU56
Lat/Lon51° 20’ N, 1° 10’ W
Vice CountyBerks, VC no: 22
CountryEngland
Voucher6 Oct 2007[A]
(Please quote this in any queries about this record)

Notes:

Small, pale and black leaf spots 1.5mm diam to 3x5mm, on leaves of Aegopodium podagraria.

Upper side of leaf with small, pale yellow, sunken, polygonal, often elongated, spots limited by veins, and largely stained by black fungal material. Occasional hyaline spore tendrils erupting from embedded pale-brown pycnidia with black ostiole and occasional effete black pycnidium erupting through the leaf epidermis. .

Underside of leaf with whitish spots containing black superficial immature pseudothecia, often concentrated in a ring just inside the edge of the spot.

Immature pseudothecia: hypophyllous, black, quite tough. Contents amorphous - not conidia.

Conidia: narrowly cylindric, curved, centrally 1-septate, 61-75/2.5µm.

The following literature was used to identify this find:

standard photographs and close-ups
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macro-photographs
macro-photographs:
photomicrographs
photomicrographs:

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