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brussels_plants [2008-10-14 14:54] – lina | brussels_plants [2008-10-14 14:56] – lina | ||
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===== Hordeum murinum (wall barley) ===== | ===== Hordeum murinum (wall barley) ===== | ||
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+ | Wall barley is an annual grass common in central, southern and eastern England, and scattered elsewhere. It is found on waste and | ||
+ | rough ground and barish patches in rough grassland. It occurs on the margins of cultivated fields. | ||
+ | Distribution is related both to the availability of ruderal habitats and to climate. Frequency decreases with increasing rainfall combined with decreasing temperatures, | ||
+ | Wall barley is part of a complex of overlapping subspecies whose centre of distribution is in the | ||
+ | Mediterranean region. Subspecies murinum is the native grass in the UK. Sub-species leporinum and glaucum are introduced casuals. | ||
+ | In Australia, biotypes of the latter two sub-species have been reported with resistance to the herbicide paraquat | ||
+ | In New Zealand, wall barley is a particular problem to stock. | ||
+ | The sharply pointed seeds can penetrate the eyes, mouth and skin of sheep causing animal losses and devaluing the pelts. | ||
+ | The level of damage is influenced by the breed of sheep, mainly due to differences in the structure of the coat. | ||
+ | Sheep dogs too are affected when the seeds become embedded between their toes. | ||
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* Plantago major(Broad-Leaved Plantain) | * Plantago major(Broad-Leaved Plantain) | ||
* Buddleja Davidii (Butterfly Bush) | * Buddleja Davidii (Butterfly Bush) | ||
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===== Pissenlit officinal or Taraxacum officinale(Dandelion) ===== | ===== Pissenlit officinal or Taraxacum officinale(Dandelion) ===== | ||
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