Storax is the incense on this site most confused with something else, and the confusion runs in both directions at once: an unrelated flowering shrub gave the true resin its common English name, and most commercial "storax" sold today is not the historical substance at all.
The resin ancient writers actually described, Dioscorides and Pliny the Elder among them, was tapped chiefly from Liquidambar orientalis of Anatolia. The English name storax, however, comes from the later genus Styrax, an unrelated group of flowering shrubs that happened to share a similar-sounding older name, and the overlap has muddled buyers and botanists for centuries; modern commercial storax is more often benzoin or another Liquidambar product than a true Anatolian Styrax gum.
Many biblical scholars identify storax with stacte, one of the four spices named for the ketoret at Exodus 30:34, the ingredient the Talmud's own commentary elsewhere singles out, alongside frankincense, as pleasant rather than merely functional. That identification is argued rather than settled: several other candidate plants have been proposed for the same word, and no botanical name in the ketoret list commands full agreement among scholars.
What is certain is narrower than either claim: a resin sold under one name, tapped from at least two unrelated plant families across two very different eras, has been read into a three-thousand-year-old temple recipe on evidence nobody can fully verify.