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File:Rumex crispus flowerhead3 (15064774986).jpg
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Size of this preview: 398 × 599 pixels. Other resolutions: 159 × 240 pixels | 319 × 480 pixels | 510 × 768 pixels | 681 × 1,024 pixels | 2,000 × 3,008 pixels.
Original file (2,000 × 3,008 pixels, file size: 968 KB, MIME type: image/jpeg)
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This is a file from the Wikimedia Commons |
Summary
| Description | 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 flowerhead3 |
| Author | Harry Rose from South West Rocks, Australia |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This image was originally posted to Flickr by Macleay Grass Man at https://www.flickr.com/photos/73840284@N04/15064774986. It was reviewed on 26 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:28, 26 May 2015 | | 2,000 × 3,008 (968 KB) | Amada44 | Transferred from Flickr via Flickr2Commons |
File usage
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