Description[ edit ] Bromus species occur in many habitats in temperate regions of the world, including Africa , America , Australia and Eurasia. There are considerable morphological differences between some species, while the morphological differences between others usually those species that are closely related are subtle and difficult to distinguish. As such, the taxonomy of the genus is complicated. Bromus is distinguished from other grass genera by a combination of several morphological characteristics, including leaf sheaths that are closed connate for most of their length, awns that are usually inserted subapically, and hairy appendages on the ovary. The leaf blades and sheaths, which comprise the leaves can be hairless, sparsely hairy or hairy.
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Cultivation Some forms of the species are sown for pasture in areas with warm and temperate climates. Naturalised Distribution A widely naturalised species that is very abundant in the south-eastern parts of Australia.
Relatively common in the southern regions of Western Australia, in south-eastern South Australia and in Tasmania. Also naturalised on Lord Howe Island and Norfolk Island, and widely naturalised in other parts of the world e. Habitat A common weed of untended areas, roadsides, parks, disturbed sites, gardens, orchards, vineyards, drainage lines and crops in temperate, sub-tropical and occasionally also semi-arid regions.
Also a weed of a wide range of natural habitats such as dry coastal vegetation, heathlands, grasslands, grassy woodlands, open woodlands and riparian areas. Habit A short-lived i. Stems and Leaves The stems i. They can be either upright i. The leaves are made up of a leaf sheath, that partially encloses the stem, and a spreading leaf blade.
Leaf sheaths are often lightly to densely covered in short or long hairs i. Flowers and Fruit The seed-head i. These florets mm long and mm wide consist of a pair of bracts i.
Flowering occurs mainly during spring and summer i. The flower spikelets turn pale brown or straw-coloured as they mature and break up at maturity, usually leaving the glumes behind i. Reproduction and Dispersal This species reproduces entirely by seed. Environmental Impact Prairie grass Bromus catharticus is regarded as an environmental weed in many parts of south-eastern Australia, particularly in New South Wales and Victoria. It has also been recorded in conservation areas e.
Phillip Island Nature Park and is a commonly reported weed species in remnant plant communities that are home to the threatened Euroa guinea-flower Hibbertia humifusa subsp. It is also a weed of bushland i. Legislation Not declared or considered noxious by any state government authorities.
Similar Species Prairie grass Bromus catharticus is similar to short brome Bromus brevis and the Chilean bromes Bromus lithobius and Bromus cebadilla. These species can be distinguished by the following differences: prairie grass Bromus catharticus has a relatively loose seed-head with spreading or drooping branches. There are several other brome grasses Bromus spp.
Check our website at www. The control methods referred to in this fact sheet should be used in accordance with the restrictions federal and state legislation, and local government laws directly or indirectly related to each control method.
These restrictions may prevent the use of one or more of the methods referred to, depending on individual circumstances. While every care is taken to ensure the accuracy of this information, DEEDI does not invite reliance upon it, nor accept responsibility for any loss or damage caused by actions based on it.
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Cultivation Some forms of the species are sown for pasture in areas with warm and temperate climates. Naturalised Distribution A widely naturalised species that is very abundant in the south-eastern parts of Australia. Relatively common in the southern regions of Western Australia, in south-eastern South Australia and in Tasmania. Also naturalised on Lord Howe Island and Norfolk Island, and widely naturalised in other parts of the world e. Habitat A common weed of untended areas, roadsides, parks, disturbed sites, gardens, orchards, vineyards, drainage lines and crops in temperate, sub-tropical and occasionally also semi-arid regions.
Weeds of Australia - Biosecurity Queensland Edition Fact Sheet
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