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Faba-bean rust

Scientific Name
Uromyces viciae-fabae
Scientific Author
(Pers.) J. Schröt.
Taxonomy
Basidiomycota, Urediniomycetes, Uredinales, Pucciniaceae
Status
Exotic Species Establishment in Australia
Reliability
High
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Diagnostic Images

Telia (black) and scattered urediniospores (orange) on stems
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Caption
for use contact alistair.mctaggart@dpi.qld.gov.au
Source
A.R. McTaggart Department of Primary Industries and Fisheries
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Diagnostic Images (11)
Diagnostic Notes

Symptoms:

 

Leaf and stem rust causing partial defoliation.

 

 

The fungus:

 

Spermogonia mostly on abaxial leaf surface. Aecia mostly on abaxial surface in small groups, mostly along veins, peridium cupulate, whitish; spores 18–26 × 15–21 µm, broadly ellipsoid, wall 1(–1.5) µm thick, verrucose. Uredinia amphigenous, yellowish-brown; spores (22–)24–29(–32) × (17–)19–22(–24) µm, broadly ellipsoid, wall 1.5(–2) µm thick, pale golden, uniformly echinulate, pores (3)4(5), equatorial or variously distributed, with small caps. Telia sometimes on adaxial surface or sometimes amphigenous and on stems, exposed, blackish brown, compact; spores (24–)27–35(–39) × (17–)19–23(–25) µm, mostly oval or obovoid, wall (1.5–)2–2.5(–3) µm thick at sides, (5–)6–9(–10) µm at apex, smooth, uniformly chestnut brown; pedicels brownish at least apically, to about 60 µm long (Cummins 1978).

More Information
Author
McTaggart, A.
Created
10/10/2007 09:34 AEST
Last Updated
21/12/2007 09:26 AEST
Citation
McTaggart, A. (2007) Faba-bean rust (Uromyces viciae-fabae ) Updated on 12/21/2007 9:26:24 AM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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