Umbel
UM'BEL, noun [Latin umbella, a screen or fan.]
In botany, a particular mode of inflorescence or flowering, which consists of a number of flower-stalks or rays, nearly equal in length, spreading from a common center, their summits forming a level, convex, or even globose surface, more rarely a concave one, as in the carrot. it is simple or compound; in the latter, each peduncle bears another little umbel umbellet or umbellicle.
Umbel is sometimes called a rundle, from its roundness.