Labdanum's first article calls it the true "amber" of the perfume trade. What it leaves for a second telling is how the resin was actually gathered for most of its history, a method strange enough that ancient writers thought it worth recording in detail.
Herodotus and other ancient sources describe labdanum being combed directly from the beards and legs of goats that had grazed among Cistus rockrose shrubs on Crete and Cyprus, the sticky resin catching in the animals' hair as they browsed and later being pulled free by hand, an incidental harvest rather than a deliberate cultivation. A purpose-built rake-like tool, the ladanisterion, was developed later to comb the resin straight from the plants instead of waiting on a goat to do the work.
Judaism preserves a separate, textual claim on the same plant: labdanum has been proposed by various commentators as a candidate for either the stacte or the onycha of the ketoret at Exodus 30, on the strength of its sweet, balsamic smoke, though as with storax, the identification is argued rather than settled and competes with at least one other candidate plant for each name.
Modern perfumery mostly forgets the goats. "Amber" as a fragrance family is very often built from labdanum today rather than from fossil amber, which is close to odourless when burned, so the scent most people mean by "amber" is this resin's, not the fossilised tree resin the word more strictly names.