( ( ( ( ( ( ( ( ( ( ( ( ( ( Its ( two incarnations ) ) , ) as ) ( a whispy ) ) , ) flowerless ) , ) ( whorled ( vegetative shoot ) ) ) , ) and ) as ) ( a ( multisheathed ( , ( spore-producing rod ) ) ) ) ) , ) ( ( have ( become ( ( the stuff ) ( of ( nightmares ( for me ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (PRP$ Its) (CD two) (NNS incarnations)) (, ,) (RB as) (NP (DT a) (NN whispy)) (, ,) (NP (NNS flowerless)) (, ,) (NP (JJ whorled) (NN vegetative) (NN shoot)) (, ,) (CC and) (RB as) (NP (DT a) (JJ multisheathed) (, ,) (JJ spore-producing) (NN rod)) (, ,)) (VP (VBP have) (VP (VBN become) (NP (NP (DT the) (NN stuff)) (PP (IN of) (NP (NP (NNS nightmares)) (PP (IN for) (NP (PRP me)))))))) (. .)))
Its two incarnations, as a whispy, flowerless, whorled vegetative shoot, and as a multisheathed, spore-producing rod, have become the stuff of nightmares for me.
(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)))))) (. .)))