They have prominent red protuberances and may have been named after the British redcoats.
( They ( ( ( ( have ( prominent ( red protuberances ) ) ) and ) ( may ( have ( been ( named ( after ( the ( British redcoats ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VP (VBP have) (NP (JJ prominent) (JJ red) (NNS protuberances))) (CC and) (VP (MD may) (VP (VB have) (VP (VBN been) (VP (VBN named) (PP (IN after) (NP (DT the) (JJ British) (NNS redcoats)))))))) (. .)))
They were named after the British redcoats.
( They ( ( were ( named ( after ( the ( British redcoats ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD were) (VP (VBN named) (PP (IN after) (NP (DT the) (JJ British) (NNS redcoats))))) (. .)))