Title comp | The vegetable system. Or, The internal structure, and The life of plants ; Their Parts, and Nourishment, Explained; their classes, orders, genera, and Species, Ascertained, and Described; In a method altogether new : comprehending An artificial index, and a natural system. With Figures of all the plants; Designed and Engraved by the author. The Whole from nature only. / By John Hill, M.D. Member of the Imperial Academy, &c. &c. ; Vol. XXIII. Containing Plants with six-petaled, irregular Flowers, and those with incompleat Flowers of One Petal |