Miyagia pseudosphaeria (Mont.) Jørst., (a rust fungus)

19 Aug 2007 at OSGR: SU56 in Berks, England

Record SummaryUredia and telia, on underside of sensecent basal leaves of Prickly Sowthistle
Found asUredia (II)
Date19 August 2007
Associated organismSonchus asper
OS grid refOSGR: SU56
Lat/Lon51° 20' N, 1° 20' W
Vice CountyBerks, VC no: 22
Voucher19 Aug 2007[E]
(Please quote this in any queries about this record)

Notes: Small punctate, pale orange-brown uredia, bursting through lower epidermis, each surrounded by a brown ring of paraphyses. Uredospores ±cylindric-ellipsoid, echinulate, thick-walled.

Telia similar but darker, dark brown to black. Teliospores: single-celled (mesospores), shortly ellipsoid, mid brown, stalked, with many pores.

There were also a few larger subcuticular uredia which were smooth and lacked the palisade of dark paraphyses. These might well be a different species of rust.

The following literature was used to identify this find:


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