Note 191 — BOOK XXIV. THE REMEDIES DERIVED FROM THE FOREST TREES.
John Bostock translation
This seems to be the meaning of “Idem cum libeat accendere resolvitur,” though in the French translations it is rendered, “It crumbles into ashes when an attempt is made to kindle it.” Holland seems to have rightly understood the passage, which probably bears reference to some current superstition.