( ( Within ( the ( petal ring ) ) ) ( ( are ( ( ( the ( two ( fertile sporophylls ) ) ) , ) ( which ( are ( ( ( derived ( from leaves ) ) and ) ( used ( to ( create spores ) ) ) ) ) ) ) ) . ) )
(ROOT (SINV (PP (IN Within) (NP (DT the) (JJ petal) (NN ring))) (VP (VBP are)) (NP (NP (DT the) (CD two) (JJ fertile) (NNS sporophylls)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VP (VBN derived) (PP (IN from) (NP (NNS leaves)))) (CC and) (VP (VBN used) (S (VP (TO to) (VP (VB create) (NP (NNS spores))))))))))) (. .)))
Within the petal ring are the two fertile sporophylls, which are derived from leaves and used to create spores.
(ROOT (SINV (PP (IN Within) (NP (DT the) (NNS petals))) (VP (VBP are) (NP (NP (CD two) (NNS whorls)) (PP (IN of) (ADJP (JJ fertile))))) (NP (NP (JJ floral) (NNS organs)) (SBAR (WHNP (WDT that)) (S (VP (VBP produce) (NP (NNS spores)))))) (. .)))