cladelabels(tree=NULL, text, node, offset=NULL, wing.length=NULL, cex=1,
orientation="vertical")"phylo". If not supplied, the function will obtain the last plotted phylogeny from the environmental variable last_plot.phylo.offset=1 if tree is supplied or offset=8 otherwise.orientation = "vertical" (the default) or "horizontal".Revell, L. J. (2012) phytools: An R package for phylogenetic comparative biology (and other things). Methods Ecol. Evol., 3, 217-223.
nodelabels