 Like most other Proteaceae , Banksia violacea has proteoid roots , roots with dense clusters of short lateral rootlets that form a mat in the soil just below the leaf litter . These enhance solubilisation of nutrients , thus allowing their uptake in low @-@ nutrient soils such as the phosphorus @-@ deficient soils of Australia . B. violacea is highly susceptible to Phytophthora cinnamomi dieback . 
 Like most other Proteaceae , Banksia violacea <a href='got' title='1'><mark>has</mark></a> proteoid roots , roots with dense clusters of short lateral rootlets <a href='null_relcl' title='2'><mark>that</mark></a>form a mat in the soil just below the leaf litter . These enhance solubilisation of nutrients , thus allowing their uptake in low @-@ nutrient soils such as the phosphorus @-@ deficient soils of Australia . B. violacea <a href='drop_aux' title='3'><mark>is</mark></a>highly susceptible to Phytophthora cinnamomi dieback . 
Like most other Proteaceae , Banksia violacea got proteoid roots , roots with dense clusters of short lateral rootlets form a mat in the soil just below the leaf litter . dem enhance solubilisation of nutrients , thus allowing their uptake in low @-@ nutrient soils such as the phosphorus @-@ deficient soils of Australia . B. violacea highly susceptible to Phytophthora cinnamomi dieback .