( ( ( ( ( ( A ( single ( giant puffball ) ) ) ( can ( harbor ( millions ( of basidiospores ) ) ) ) ) , ) and ) ( ( the mucelium ) ( can ( ( ( produce ( several ( each year ) ) ) ( for ( ( the life ) ( of ( the mycelium ) ) ) ) ) ( -LRB- ( ( For ( ( ( ( the sake ) ( of argument ) ) , ) ( say ( 10 years ) ) ) ) -RRB- ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT A) (JJ single) (NN giant) (NN puffball)) (VP (MD can) (VP (VB harbor) (NP (NP (NNS millions)) (PP (IN of) (NP (NNS basidiospores))))))) (, ,) (CC and) (S (NP (DT the) (NN mucelium)) (VP (MD can) (VP (VB produce) (NP (JJ several) (DT each) (NN year)) (PP (IN for) (NP (NP (DT the) (NN life)) (PP (IN of) (NP (DT the) (NN mycelium))))) (PRN (-LRB- -LRB-) (PP (IN For) (NP (NP (DT the) (NN sake)) (PP (IN of) (NP (NN argument))) (, ,) (VP (VBP say) (NP (CD 10) (NNS years))))) (-RRB- -RRB-))))) (. .)))
A single giant puffball can harbor millions of basidiospores, and the mucelium can produce several each year for the life of the mycelium (For the sake of argument, say 10 years).
(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))))) (. .)))