File:Myriophyllum aquaticum habit3 (14464004278).jpg
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[edit]DescriptionMyriophyllum aquaticum habit3 (14464004278).jpg | Introduced, warm-season, perennial aquatic or semi-aquatic herb that roots freely from the lower nodes. Stems are to 5 m long, often protruding about 30 cm above the water. Emergent leaves occur in whorls of 4-6 and are hairless, grey-green and feather-like (10-18 pairs of leaflets). Only female plants are present in Australia; flowers are solitary and tiny (to 0.5 mm long) in the leaf axils. Flowering is during the warmer months. A native of central South America, it is an escapee from aquariums and water-gardens, and now an environmental weed. Found in shallow, still to slow-flowing, dams, pools and creeks, especially if nutrient enriched. Spread only by stem fragments via humans and water as fruit are not formed in Australia. Can form dense stands that choke waterways and exclude native plants and animals. Control by manual removal over the warmer months; dry out in the sun and don’t dispose of near creeks or ditches. There are no registered herbicides for control. |
Date | |
Source | Myriophyllum aquaticum habit3 |
Author | Harry Rose from South West Rocks, Australia |
Licensing
[edit]This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Macleay Grass Man at https://www.flickr.com/photos/73840284@N04/14464004278. It was reviewed on 26 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
26 May 2015
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:06, 26 May 2015 | 2,592 × 1,944 (2.11 MB) | Amada44 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | NIKON |
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Camera model | E5400 |
Exposure time | 10/773 sec (0.012936610608021) |
F-number | f/5.6 |
ISO speed rating | 50 |
Date and time of data generation | 12:35, 18 March 2008 |
Lens focal length | 5.8 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E5400v1.3 |
File change date and time | 17:24, 14 July 2014 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 12:35, 18 March 2008 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Partial |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 28 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Unique image ID | 647b730aa287be9eaff00e157a4ce5ce |
Keywords |
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IIM version | 4 |