Note 886 — BOOK XIX. THE NATURE AND CULTIVATION OF FLAX, AND AN ACCOUNT OF VARIOUS GARDEN PLANTS.

Possibly the Ferula asafœtida of Linnæus; or, according to some, the Thapsia silphium of Viviani, Flor. Lib. It was a plant common, according to ancient writers, to Syria, Armenia, Media, and Libya; but it was the produce of this last country, probably, that afforded the juice or gum resin here mentioned as “laser,” and so highly esteemed by the ancients, as forming a component part of their perfumes. Fée is inclined to think that the Laserpitium here spoken of was the Thapsia silphium, and to reject the more general opinion that it is identical with the Ferula asafœtida. Pliny has probably caused some confusion by blending the description of other writers with that given by Theophrastus, each having in view a different plant. Indeed, whatever the Laserpitium or Silphium of other countries may have been, it is not improbable that the odoriferous plant of Cyrenaica was not identical with the Ferula asafœtida of Linnæus. The foliage of the Thapsia silphium is exactly similar to that of the Laserpitium as depicted on medals of Cyrenaica, still extant. We learn from Littré, that Dr. Guyon showed, in 1842, to the Académie des Sciences, a plant which the Arabs of Algeria employ as a purgative, and which they call bonnefa. It is the Thapsia Garganica of Desfontaines, and is considered by Guyon to be identical with the Silphium of the ancients.