 The headland is primarily covered with grass , as well as heather ( Calluna vulgaris ) , bracken ( Pteridium aquilinum ) , thyme ( Thymus <unk> ) and western gorse ( Ulex gallii ) . In 1962 , specimens of the comparatively rare western clover ( Trifolium occidentale ) were found on Zennor Head . The lichen <unk> <unk> has also been found high on the acid schist cliffs on the north- , seaward @-@ side of the headland . The parasitic plant <unk> ( <unk> x . ) is also found amongst the other plants . There are also typical coastal flowering plants such as kidney vetch ( <unk> <unk> ) , sea campion ( Silene uniflora ) , and thrift ( Armeria maritima ) . 
