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Aecidium fragiforme

Scientific Name
Aecidium fragiforme
Scientific Author
Ces.
Taxonomy
(Basidiomycota: Pucciniomycetes: Pucciniales)
Pest Status
0 Unknown
Status
0 NZ - Unknown
Reliability
High
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Diagnostic Images (5)
Diagnostic Notes
Disease

Leaf rust, causing hypertrophy, sometimes on young shoots. Galls up to 15 mm diam. and 5 mm high, often depressed on opposite, undersurface of leaf. Yellow aecia produced on galls usually on upper surface of leaf. Most common on young plants, sometimes leading to defoliation.

Morphology

Aecia and pycnia aggregated on spots, spots more or less circular, sometimes causing a convex/concave leaf distortion or some crimping of the leaf, initially yellow becoming reddish brown, up to 2 cm diam.; pycnia 0.1 mm diam; aecia yellow, circular or subcircular, ca. 1 mm diam., surrounded by epidermal tissue, usually on upper surface of leaf. Aeciospores pale yellow (fading to subhyaline), angular, subglobose or oval, 32–50 × 28–40 µm, wall 4–6 µm thick, coarsely covered in conical spines. Uredinia and telia not known.

Notes

Records of rust on Agathis spp. in New Caledonia refer to another rust, Aecidium balansae Cornu ex Pat., distinguished primarily by ornamentation of the aeciospore surface. This rust, on Agathis ovata and A. moorei, is known only from New Caledonia.

More Information
Specimen Contact
Eric McKenzie
Author
McKenzie, E.
Created
11/07/2013 07:31 AEST
Last Updated
07/05/2014 02:07 AEST
Citation
McKenzie, E. (2013) Aecidium fragiforme (Aecidium fragiforme) Updated on 5/7/2014 2:07:10 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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