( ( ( ( ( ( The angiosperms ) , ) or ) ( flowering plants ) ) , ) ( ( are ( ( all members ) ( of ( the ( phylum Anthophyta ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS angiosperms)) (, ,) (CC or) (NP (VBG flowering) (NNS plants)) (, ,)) (VP (VBP are) (NP (NP (DT all) (NNS members)) (PP (IN of) (NP (DT the) (NNP phylum) (NNP Anthophyta))))) (. .)))
The angiosperms, or flowering plants, are all members of the phylum       Anthophyta.
(ROOT (S (NP (NNS Angiosperms)) (VP (VBP are) (NP (NP (DT the) (ADJP (RBS most) (JJ successful)) (NN phylum)) (PP (IN of) (NP (NNS plants))))) (. .)))
Angiosperms are the most successful phylum of plants.