( It ( ( grows ( ( ( ( at ( ( the heads ) ( of ( mountain streams ) ) ) ) , ) or ) ( in ( ( ( ( rocky areas ) ( within ( crevices ( with ( shallow soils ) ) ) ) ) , ) ( often ( derived ( from ( ( granite or ) basalt ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ grows) (PP (PP (IN at) (NP (NP (DT the) (NNS heads)) (PP (IN of) (NP (NN mountain) (NNS streams))))) (, ,) (CC or) (PP (IN in) (NP (NP (JJ rocky) (NNS areas)) (PP (IN within) (NP (NP (NNS crevices)) (PP (IN with) (NP (JJ shallow) (NNS soils))))) (, ,) (VP (ADVP (RB often)) (VBN derived) (PP (IN from) (NP (NN granite) (CC or) (NN basalt)))))))) (. .)))
It grows at the heads of mountain streams, or in rocky areas within crevices with shallow soils, often derived from granite or basalt.
(ROOT (S (NP (NNS Streams)) (ADVP (RB often)) (VP (VBP start) (PP (IN in) (NP (NNS mountains)))) (. .)))