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Algae spot

Scientific Name
Cephaleuros virescens
Scientific Author
Kunze ex E.M. Fries
Taxonomy
Chlorophyta: Ulvophyceae: Trentepohliales: Trentepholiaceae
Risk
Unknown
Status
Native Thailand Disease Species
Reliability
High
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Diagnostic Images

Sporangia
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Caption
Sporangia of Cephaleuros virescens
Source
Photchana Trakunsukharat Department of Agriculture
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Diagnostic Images (3)
Diagnostic Notes
The algae can infect many host plants. At once of infection, leaves have a greenish gray round spots 0.3-1.0 cm in diameter, scattered on upper surface of leaf blade while lower surface has no symptoms. Leaves affected are those exposed to sunlight. At advanced stage. The spot becomes velvet and rust red in color. When leaves become more mature, the spots turn gray. Damage to leaves not clearly evident. Branches and trunks velvety, rust red blemishes appear on branches and trunks, especially on young shoots. The bark at the site of infection cracks if exposed to sunlight and the tree suffers. Description from Department of Agriculture (2003)
More Information
Specimen Contact
Photchana Trakunsukharat
Author
Trakunsukharat, P., Songsang, P.
Created
22/06/2011 06:29 AEST
Last Updated
22/06/2011 19:30 AEST
Citation
Trakunsukharat, P., Songsang, P. (2011) Algae spot (Cephaleuros virescens) Updated on 6/22/2011 7:30:11 PM 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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