PRELIMINARY KNOWLEDGE.

...nevertheless, he Referring to Joseph Pitton de Tournefort (1656–1708), the influential French botanist. concedes that it must be removed original: rescindendum from the fourth Section of the second Class, even though the Title of that Class is Herbs with a Regular Single-Petaled Flower, etc. original: Herba Flore Monopetalo Regulari &c. Thus, on page 77 of his Elements of Botany original: Elem. Bot. pag. 77.; Éléments de botanique (1694)., he admits that Dogbane original: Apocynum possesses flowers of two different forms, yet he does not create two separate genera of Dogbane because of it. Likewise, although he asserts that the shape of the flower constitutes a sufficiently notable difference to distinguish between Solomon’s Seal original: Sigillum Salomonis and Lily of the Valley original: Lilium convallium, he maintains that the Branched broad-leaved Solomon’s Seal (or the fourth kind described by Clusius Charles de l'Écluse (1526–1609), a pioneering Flemish botanist.)—which, according to the testimony of Clusius and Jean Bauhin Swiss botanist (1541–1613) known for his encyclopedic plant descriptions., produces flowers very similar to those of the Lily of the Valley—must be grouped with Solomon’s Seal original: Polygonatum because it matches it in all its other parts. Mr. Tournefort indeed does not formally rank it there, but neither does he exclude it.

So, on page 79 of the same book, he refers Silk-vine original: Periploca to the fourth Section of the first Class, even though, strictly speaking, he admits it should be placed among the Herbs of the first Class that have a Star-shaped Flower Flore Stellato. Likewise, on page 323, he counts Purple meadow clover original: Trifolium pratense purpureum among the rest of the Legumes Leguminosis that have an irregular polypetalous multi-petaled flower, despite the fact that its flower is actually monopetalous single-petaled.

"Purple meadow clover," he says in the preface to Elements of Botany, "has all the essential marks of a genuine Clover original: Trifolium, except that its flower—which otherwise has the same external or apparent form as the flowers of other species—is single-petaled, and is not composed of several leaves according to the rule of the others. Nor, however, do I think it should be excluded from the Clover genus because of this diversity, because that difference is not noticeable except to those alone who curiously examine and dissect plants and their parts."

Likewise, in the case of Sea-lavender original: Limonium, the defining trait Character of which is to have a pentapetalous five-petaled flower, he includes two herbs found by him in Spain, namely Shrubby Spanish Sea-lavender with Sea-purslane leaves and Spanish Sea-lavender with many-cleft leaves, whose flowers are in truth single-petaled, although they appear to be entirely similar to the flowers of other species. Finally, why is he so concerned about the Yellow stock with pouch-like seeds of Alpini... Prospero Alpini (1553–1617)