What is the most official source for plants botanical name, I encountred a problem with the name of plant species called Hypoestes forsskaolii (Vahl ) R.Br. (according to www.theplantlist.org ) but according to The International Plant Names Index the proposed name is Hypoestes forskaolii (Vahl) R.Br.
other sources give the name Hypoestes forskalei Vahl. Roem. & Schult.
What is the most credible source??