corymb
A cluster of flowers with a flat or convex top.
Hoya carnosa (Thick-leaved).—Foliage large, flowers in large drooping corymbs; they are of a pinkish-white colour, and contain, or rather yield, drops of pure sweet honey; hence this fine old plant is known as the Honey plant.
Where it comes from
From the French corymbe, from the Latin corymbus, from the Ancient Greek κόρυμβος (kórumbos). Doublet of corymbus.
Adapted from the Wiktionary entry corymb (CC BY-SA 4.0).