- the tree description object for the tree with index `i` i should be in the range [0, ntrees)
the description of the tree stored at position `i' in `treeDescription'. Assumes that `i' will be in the range [0..`ntrees').
in NCL version 2.1 and greater, this newick string is guaranteed to use taxon numbers (1-based) in the newick string. This makes it easier to parse.
Definition at line 796 of file nxstreesblock.cpp.