( This ( ( causes ( the ( fungus ( to ( ( ( ( ( grow ( fruiting bodies ) ) only ) ( on ( ( the ( outer rim ) ) ( of ( the mycelium ) ) ) ) ) , ) ( producing ( a ring ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ causes) (NP (DT the) (NN fungus) (S (VP (TO to) (VP (VB grow) (NP (VBG fruiting) (NNS bodies)) (ADVP (RB only)) (PP (IN on) (NP (NP (DT the) (JJ outer) (NN rim)) (PP (IN of) (NP (DT the) (NN mycelium))))) (, ,) (S (VP (VBG producing) (NP (DT a) (NN ring))))))))) (. .)))
This causes the fungus to grow fruiting bodies only on the outer rim of the mycelium, producing a ring.
(ROOT (S (NP (NP (DT Some)) (PP (IN of) (NP (DT the) (JJ giant) (NN fairy) (NNS rings)))) (VP (VBP are) (VP (VBN produced) (PP (IN by) (NP (NN mycelia))))) (. .)))