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File:Oxalis pes-caprae flower5 (14706879736).jpg

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Description Introduced, cool-season, perennial herb, with a fleshy white rhizome and 2-3 cm long,brown bulbs; bulbils are formed on a white fleshy rhizome and in axils of basal leaves. Vegetative parts die off during summer and re-shoot again in autumn. Aerial stems are absent or greatly reduced. Leaves are trifoliolate; leaflets are heart-shaped and 1-3 cm across, often with dark blotches. Yellow flowers occur in groups of 3-25 at the tips of stems that arise from the base of the plant. Sepals 5. Petals 5 and fused. Produces vegetative shoots in autumn and most flowering is in late winter and spring. No fruit are produced in Australia. A native of South Africa, it was introduced as a garden ornamental. It occurs where annual rainfall is greater than 320 mm per annum and colonises disturbed soils with moderate to high fertility & good moisture holding capacity. Spread by tuberous bulbs, bulbils and rhizomes. Disturbance of a colony can result in massive recruitment of new plants. Heavy infestations can be as dense as 3000 plants per square metre. A garden escape, it is now a weed of pastures, crops and orchards where it is extremely difficult to control once established. Competitive in pastures from autumn-spring, especially in winter rainfall annual pastures. It has been know to cause oxalate poisoning in sheep. Plants can be controlled by digging and removing bulbs or repeated use of herbicides.
Date
Source Oxalis pes-caprae flower5
Author Harry Rose from South West Rocks, Australia

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This image was originally posted to Flickr by Macleay Grass Man at https://www.flickr.com/photos/73840284@N04/14706879736. 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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11 September 2013

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current15:10, 26 May 2015Thumbnail for version as of 15:10, 26 May 20154,000 × 3,000 (3.25 MB)Amada44Transferred from Flickr via Flickr2Commons

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