Throughout his lifetime Gronovius amassed an extensive collection of zoological and botanical specimens.
He is especially remembered for his work in the field of ichthyology, where he played a significant role in the classification of fishes.
Today, a number of these preserved specimens are kept in the Natural History Museum in London.
In 1762 he published the second edition of his father's Flora Virginica exhibens Plantas.
[1] Gronovius is commemorated in the scientific name of a species of lizard, Scelotes gronovii[2] and of the man-of-war fish