Your are here:

Alternaria longipes

Scientific Name
Alternaria longipes
Scientific Author
(Ellis & Everh.) E.W. Mason
Taxonomy
(Ascomycota: Dothideomycetes: Pleosporales: Pleosporaceae)
Pest Status
1 NZ - Non-regulated species
Status
NZ - Exotic
Reliability
High
Download
PDF

Page menu options:

Diagnostic Images

Close
Caption
Source
Image Options
Close
Diagnostic Images (5)
Diagnostic Notes
Disease

Brown spot. Leaf spots circular up to 1 cm or more diam., brown, becoming zonate and surrounded by a yellow halo. Occurs mainly on older leaves, but also infects seedlings.

Morphology

Conidiophores arising singly or in groups, pale olivaceous brown, up to 80 µm long, 3–5 µm thick, with one or more distinct conidial scars. Conidia sometimes solitary but usually in chains of up to 10–15 or more, sometimes 1–3 branches of 1–7 conidia, straight or slightly curved, obclavate, ovoid or narrowly ellipsoid, body of conidium 12–35(–48) µm long, 5–12(–14) µm wide, pale to mid brown, smooth or verrucose, 3–8 (commonly 5–6) transverse septa, 1–2 longitudinal or oblique septa, constricted at septa; apical secondary conidiophore 1-celled, 3 × 3 µm.

Notes

This species has been often mistaken for Alternaria alternata.

More Information
Specimen Contact
Eric McKenzie
Author
McKenzie, E.
Created
11/07/2013 09:10 AEST
Last Updated
07/05/2014 03:34 AEST
Citation
McKenzie, E. (2013) Alternaria longipes (Alternaria longipes) Updated on 5/7/2014 3:34:43 AM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

Loading