| cache_treebase | A function to cache the phylogenies in treebase locally | 
| download_metadata | Download the metadata on treebase using the OAI-MPH interface | 
| drop_nontrees | drop errors from the search | 
| dryad_metadata | Search the dryad metadata archive | 
| have_branchlength | Simple function to identify which trees have branch lengths | 
| metadata | metadata.rda | 
| search_treebase | A function to pull in the phyologeny/phylogenies matching a search query | 
| treebase | treebase.rda |