The conventional tree view is a natural way to represent a dendrogram but is only usable for very small trees.
Using the interactive power of computers we can build a more compact view. Leaves are represented as points on a grid. Boxes are drawn round the points to represent the hierarchy. It is possible to set the number of clusters, to select a cluster, or to inspect a leaf. The component is presented with a simple test program (load a fasta file and inspect the pylogeny).