Umbel n. (Bot.) A kind of flower cluster in which the flower stalks radiate from a common point, as in the carrot and milkweed. It is simple or compound; in the latter case, each peduncle bears another little umbel, called umbellet, or umbellule.
... Harson," said Clara, pleased with her knowledge. "'Umbel' means 'like an umbrella,' and 'raceme' means 'growing along ... — Among the Trees at Elmridge • Ella Rodman Church