( ( ( ( Diploid ( , ( or ( spore-producing , ) ) ) ) phase ) ( of ( an organism ) ) ) . )
(ROOT (NP (NP (NP (ADJP (JJ Diploid) (, ,) (CC or) (JJ spore-producing) (, ,)) (NN phase)) (PP (IN of) (NP (DT an) (NN organism)))) (. .)))
Diploid, or spore-producing, phase of an organism.
(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)))))) (. .)))