The true flowers (which are ornamentally insignificant) are small yellow-green inflorescences centered among the four showy white bracts.
green, opposite simple leaves, I have seen great red fall color
20-30 feet tall in favorable climates, developes horizontal branching with age
Variable from seed giving forth to a plethora of cultivars. Genus name "Cornus" is derived from the word cornu which means “horn” and refers to the hard wood. The species name "kousa" is the Japanese name for this dogwood
Over the years I have observed one of these plants and it seems to struggle in our winters.
Notes & Reference
#01-Manual of Woody Landscape Plants (Michael Dirr), #175-Dogwoods (Paul Cappiello and Don Shadow)