( ( ( The collection ) ( of ( Charophytes-other ( freshwater plants ) ) ) ) ( ( contains ( ( ca. 500 ) specimens ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN collection)) (PP (IN of) (NP (JJ Charophytes-other) (NN freshwater) (NNS plants)))) (VP (VBZ contains) (NP (QP (CD ca.) (CD 500)) (NNS specimens))) (. .)))
The collection of Charophytes-other freshwater plants contains ca. 500 specimens.
(ROOT (S (NP (NNS Charophytes)) (VP (VBP are) (NP (NP (DT the) (JJS closest) (VBG living) (NNS relations)) (PP (TO to) (NP (NN land) (NNS plants))))) (. .)))