The herbaceous plants are dominated by " Cenchrus biflorus " and " Panicum laetum ".
2.
The southern limit of the Sahara is indicated botanically by the southern limit of " Cornulaca monacantha " ( a drought-tolerant member of the Chenopodiaceae ), or northern limit of " Cenchrus biflorus ", a precipitation varies annually ).
3.
""'Rubus biflorus " "'is a flowering plant in the genus " Rubus " ( including raspberries & blackberries ), in the native to East Asia, growing 3m to 3.5m, which is grown ornamentally for its arching white thorny stems in Winter.
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