The flower buds are arranged in leaf axils, usually in groups of seven on a thin, unbranched peduncle 15–35 mm (0.59–1.38 in) long, the individual buds on pedicels 3–12 mm (0.12–0.47 in) long.

Mature buds are a blunt, elongated oval shape, 22–39 mm (0.87–1.54 in) long and 6–10 mm (0.24–0.39 in) wide and finely ribbed with a rounded operculum about the same length as the floral cup.

[2][3][4] Eucalyptus stowardii was first formally described in 1917 by Joseph Maiden in the Journal and Proceedings of the Royal Society of New South Wales from specimens collected near Kellerberrin by Frederick Stoward.

[3] The fluted-horn mallee is found on stony rises, limestone hills and road verges between Dowerin, Carnamah and Wubin in the central northern Wheatbelt region of Western Australia, where it grows in open shrubland in gravelly sand-loam soils.

[2][3] This mallee is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.