Figure 2

Use case diagram for the implementation of the referencearchitecture, displaying both the minimal workflow requirements(upper) and the complete workflow (lower) with moduleindependence. The method names are represented in the leftcolumn. When a list of names is submitted to the controller, theTNRS endpoint is invoked with a set of configuration parameters.This list of URI names is then submitted to the tree-store serviceand the output expected is a set of matched megatrees. The megatreeURIs and the user-selected taxa URIs are then submitted to thetopology endpoint, which responds with the phylotastic trees.Finally, the URIs are submitted to the Branch Length module, whichreturns the chronogram or trees annotated with branch lengths.