File:Juncus acutus plant NC8.jpg
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DescriptionJuncus acutus plant NC8.jpg |
English: Introduced, yearlong-green perennial, tussock-forming, shortly rhizomatous rush. Stems are 30–160 cm long and 2–4 mm diam. Leaves are terete, basal, shorter than the stems and sharp tipped. Flowerheads are 4–13 cm long; flowers are clustered, with 5–50 clusters per flowerhead. Capsules are much longer than the outer tepals. Flowering is from spring to summer. A serious weed of seasonally to permanently damp areas that should be eradicated before it becomes extensive and uncontrollable. Spiny Rush forms dense hemispherical tussocks. Its leaves and flower stems end in very sharp, hard points that can pierce the skin. It is a serious weed because of its abundant seed production, very pointed tips and large root-ball, which make control difficult. |
Date | |
Source | https://www.flickr.com/photos/73840284@N04/32201306014/ |
Author | Macleay Grass Man |
Camera location | 32° 24′ 15.46″ S, 151° 44′ 21.34″ E | View this and other nearby images on: OpenStreetMap | -32.404295; 151.739262 |
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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://flickr.com/photos/73840284@N04/32201306014. It was reviewed on 28 April 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
28 April 2021
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:15, 28 April 2021 | 4,000 × 3,000 (6.85 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by Macleay Grass Man from https://www.flickr.com/photos/73840284@N04/32201306014/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot A650 IS |
Exposure time | 1/640 sec (0.0015625) |
F-number | f/4 |
ISO speed rating | 80 |
Date and time of data generation | 09:40, 15 August 2015 |
Lens focal length | 7.4 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
File change date and time | 09:40, 15 August 2015 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 09:40, 15 August 2015 |
Meaning of each component |
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Image compression mode | 5 |
APEX shutter speed | 9.3125 |
APEX aperture | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
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 |