File:Richardia stellaris flowerhead6 (14953790461).jpg
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[edit]DescriptionRichardia stellaris flowerhead6 (14953790461).jpg | Introduced warm-season perennial, hairless to hairy herb. Stems are prostrate and less than 15 cm long. Leaves are opposite, ovate, 0.7-2.5 cm long and 0.2-0.5 cm wide. Flowerheads are heads of a few to many, small (2-4 mm long), white flowers, with 4 petals and 4-5 sepals. Leaf-like bracts surrounding the flowerheads are nearly hairless on the upper surface. Flowering is from late winter to autumn. A native of South America, it is a weed of disturbed places, such as river flats, stockyards and roadsides. It is only abundant in hard conditions (sandy soils with low water holding capacity) where there is low ground cover or where there has been disturbance from ploughing or flooding. An indicator of disturbance and poor ground cover. Of little importance to livestock grazing, as it usually occurs in low abundance, is very low growing and produces little bulk. Control is rarely required, as abundance is suppressed with healthy vigorous pastures. Herbicides are registered for its control. |
Date | |
Source | Richardia stellaris flowerhead6 |
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@N04/14953790461. 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 | 4,000 × 3,000 (5.68 MB) | Amada44 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot A650 IS |
Exposure time | 1/40 sec (0.025) |
F-number | f/4.5 |
ISO speed rating | 200 |
Date and time of data generation | 13:12, 24 May 2014 |
Lens focal length | 7.4 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Picasa |
File change date and time | 18:55, 18 August 2014 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 13:12, 24 May 2014 |
Meaning of each component |
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Image compression mode | 5 |
APEX shutter speed | 5.3125 |
APEX aperture | 4.34375 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 13,745.704467354 |
Focal plane Y resolution | 13,698.630136986 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Unique image ID | 1827f743f25fcc00560a3ae3eb74a1ed |
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IIM version | 4 |