This relation can be used for geographic features (e.g. rivers) as well as anatomical structures (plant branches and roots, leaf veins, animal veins, arteries, nerves),Do not use this relation directly. It is ended as a grouping for a diverse set of relations, all involving branching relationships

A relationship that holds between two material entities in a system of connected structures, where the branching relationship holds based on properties of the connecting network.

http://purl.obolibrary.org/obo/IAO_0000428

http://purl.obolibrary.org/obo/cl.owl

http://purl.obolibrary.org/obo/BFO_0000050

https://github.com/obophenotype/uberon/issues/170,http://purl.obolibrary.org/obo/ro/docs/branching_part_of.png

Chris Mungall