( ( Nonvascular plants ) ( ( ( have never ) ( ( evolved ( to ( ( ( ( the size ) ( of ( vascular plants ) ) ) , ) ( most likely ) ) ) ) ( because ( they lack ) ) ) ) ... ) )
(ROOT (S (NP (NNP Nonvascular) (NNS plants)) (VP (VBP have) (ADVP (RB never)) (VP (VBN evolved) (PP (TO to) (NP (NP (DT the) (NN size)) (PP (IN of) (NP (NN vascular) (NNS plants))) (, ,) (ADJP (RBS most) (JJ likely)))) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP lack)))))) (: ...)))
Nonvascular plants have never evolved to the size of vascular plants, most likely because they lack...
(ROOT (S (NP (NP (DT The) (ADJP (RBS most) (JJ basic)) (NN division)) (PP (IN of) (NP (NN land) (NNS plants)))) (VP (VBZ is) (PP (IN between) (NP (NN nonvascular) (CC and) (NN vascular) (NNS plants)))) (. .)))