Species Plantarum (Latin for "The Species of Plants") is a book by Carl Linnaeus, originally published in 1753. It lists every plant species known at that point of time.
Systema Naturae was yet another important publication of Linnaeus, the first edition of which was published in 1735. The tenth edition, considered to be the most important one, is where Linnaeus describes zoological nomenclature.
So, the correct answer is option C.