( ( Poison Ivy ) ( ( ( is ( distinguished ( from ( other plants ) ) ) ) ( by ( ( its ( three leaflets ) ) ( per ( ( leaf and ) ( the ( alternate ( leaf arrangement ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Poison) (NNP Ivy)) (VP (VBZ is) (ADJP (JJ distinguished) (PP (IN from) (NP (JJ other) (NNS plants)))) (PP (IN by) (NP (NP (PRP$ its) (CD three) (NNS leaflets)) (PP (IN per) (NP (NP (NN leaf)) (CC and) (NP (DT the) (JJ alternate) (NN leaf) (NN arrangement))))))) (. .)))
Poison Ivy is distinguished from other plants by its three leaflets per leaf and the alternate leaf arrangement.
(ROOT (S (NP (NN Poison) (NN ivy)) (ADVP (RB typically)) (VP (VBZ has) (NP (NP (CD three) (NNS groups)) (PP (IN of) (NP (NNS leaves))))) (. .)))