Plant anatomy
It was in the late 1600s that plant anatomy became refined into a modern science. Italian doctor and microscopist, Marcello Malpighi, was one of the two founders of plant anatomy. In 1671 he published his "Anatomia Plantarum", the first major advance in plant physiogamy since Aristotle. The other founder was the British doctor Nehemiah Grew. He published "An Idea of a Philosophical History of Plants" in 1672 and "The Anatomy of Plants" in 1682. Grew is credited with the recognition of plant cells, although he called them 'vesicles' and 'bladders'. He correctly identified and described the sexual organs of plants (flowers) and their parts.
Louis Gayant
Louis Gayant (died 1673) was a French surgeon and anatomist. He was one of the founding members of the French Academy of Sciences.
He was born at Clermont-en-Beauvaisis, and became a leading anatomist, but remained unpublished. He is given credit in the discovery by Jean Pecquet of the Cisterna chyli.