Puccinia oxalidis Dietel & Ellis, (oxalis rust)


27 Jun 2007 at OSGR: SU56 in Berks, England

Record Summaryon Large Flowered Pink Sorrel (garden weed)
Found asUredia (II)
Date27 June 2007
Associated organismOxalis debilis var corymbosa (DC.) Lourt.
OS grid refOSGR: SU56
Lat/Lon51° 20’ N, 1° 10’ W
Vice CountyBerks, VC no: 22
CountryEngland
Voucher27 Jun 2007[A]
(Please quote this in any queries about this record)

Notes:

Uredia: hypophyllous, bright orange, in groups, occasionally circinate (especially around holes in the leaf). Infected leaves curl upwards to reveal bright orange uredia on under surface. Leaf upper surface with faded yellowish, unbounded, depressed spots above the uredia clusters.

Uredospores: echinulate, globose to ellipsoid, 15.5-20.5/13-15.5µm, with granular orange contents and thick hyaline wall.

The following literature was used to identify this find:

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

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