( ( ( Reproductive methods ) ( as ( factors ( in ( speciation ( in ( flowering plants ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NNP Reproductive) (NNS methods)) (PP (IN as) (NP (NP (NNS factors)) (PP (IN in) (NP (NP (NN speciation)) (PP (IN in) (NP (VBG flowering) (NNS plants))))))) (. .)))
Reproductive methods as factors in speciation in flowering plants.
(ROOT (S (NP (NP (DT A) (NN method)) (PP (IN of) (NP (NP (JJ sexual) (NN reproduction)) (SBAR (WHNP (WDT that)) (S (VP (VBZ occurs) (PP (IN in) (NP (NNS plants))))))))) (VP (MD can) (VP (VB be) (VP (VBN described) (SBAR (IN as) (S (NP (NNS seeds)) (VP (VBP are) (VP (VBN produced) (PP (IN from) (NP (NP (DT the) (NN flower)) (PP (IN of) (NP (DT the) (NN plant)))))))))))) (. .)))