Sentence:  In the Cape region of South Africa the leaves of the wild <WSD>redbush</WSD> ["Aspalathus linearis" (Burm. f.) R. Dahlgr.] are collected by farmers for export as Rooibos tea. 
Meaning of the word marked with <WSD> tags:  (rooibos) (shrub of genus "Aspalathus")