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In page Geography of Afghanistan:

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Down to 1,000 m (3,300 ft) there are wild olive, species of rock-rose, wild privet, acacias and mimosas, barberry and Zizyphus; and in the eastern ramifications of the chain, Nannerops ritchiana (which is applied to a variety of useful purposes), Bignonia or trumpet flower, sissu, Salvadora persica, verbena, acanthus, varieties of Gesnerae.[citation needed]