Clethra barbinervis is a species of flowering plant in the genus "Clethra" of the family Clethraceae, native to the far east, from eastern China, Korea, and Japan.
 It is an upright shrub growing to 3 m , with dark green leaves 5 cm long, and racemes of small, fragrant, white flowers 15 cm long in late summer and autumn.
 Mature specimens have attractive peeling bark.
 Though hardy, it requires a sheltered location in temperate regions.
Clethra is a genus of flowering shrubs or small trees described as a genus by Linnaeus in 1753.
Echinacea is a genus, or group of herbaceous flowering plants in the daisy family.
 The "Echinacea" genus has nine species, which are commonly called purple coneflowers.
 They are found only in eastern and central North America, where they are found growing in moist to dry prairies and open wooded areas.
 They have large, showy heads of composite flowers, blooming from early to late summer.
 The generic name is derived from the Greek word ἐχῖνος ("ekhinos"), meaning "hedgehog," due to the spiny central disk.
 These flowering plants and their parts have different uses.
 Some species are cultivated in gardens for their showy flowers.
 "Echinacea purpurea" is used in folk medicine.
 Two of the species, "E. tennesseensis" and "E. laevigata", are listed in the United States as endangered species.

Question: Echinacea and Clethra, have flowers?
Answer: yes