File:Rumex crispus habit1 (14901322080).jpg
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DescriptionRumex crispus habit1 (14901322080).jpg | Introduced, cool-season, perennial, erect herb, to 1.5 m tall. Leaves are waxy and up to 40 cm long, often with wavy edges. Flowerheads have dense whorls of flowers along mostly leafless stems. Fruits are 3-6 mm long, with a central egg-shaped lump and smooth margins. Flowering is in spring and early summer. A native of Europe and south-western Asia, it is a common weed of pastures, cropping and roadsides. It occurs on a wide range of fertile moist soils. A competitive plant that can occur in dense stands; more a problem in autumn sown pastures/crops such as ryegrass or oats or after autumn floods. Commonly used in herbal medicine for a variety of complaints. Generally unpalatable, but grazed by stock (not horses) when green feed is scarce. Suspected of causing oxalate poisoning in cattle, although large quantities would need to be consumed. Seedlings require bare ground for germination and are very sensitive to competition, so maintaining dense vigorous pastures, especially from autumn to spring, can be an effective control. Can also be controlled with spot spraying, digging up or cultivation to at least 20 cm deep. |
Date | |
Source | Rumex crispus habit1 |
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@N04/14901322080. 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 | 17:28, 26 May 2015 | 2,592 × 1,944 (2.05 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 | 10/857 sec (0.011668611435239) |
F-number | f/7.1 |
ISO speed rating | 50 |
Lens focal length | 5.8 mm |
Date and time of data generation | 05:35, 11 December 2007 |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E5400v1.3 |
File change date and time | 09:34, 31 August 2014 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | Unknown date |
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 | 6fb78c38e7ef75be9f112c562c6fa6a5 |
Keywords |
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IIM version | 4 |