Bot. [ad. mod.L. umbellula, f. UMBELLA: See -ULE. Cf. F. ombellule.] A partial or secondary umbel; an umbellet.
Also (in recent Dicts.) umbellulate, -ated adjs.
1793. Martyn, Lang. Bot., Umbellula, an Umbellule or Umbellet.
1796. Withering, Brit. Plants (ed. 3), I. 204. Leafits acute, as long as the umbellule.
1812. New Bot. Garden, I. 8. The flowers in umbels, umbellules … in pairs.
1843. Penny Cycl., XXV. 498/1. If the primary pedicels have other smaller pedicels, which form of themselves a smaller umbel,… the umbel is said to be compound, and the smaller umbels are called umbellules.
1861. Bentley, Man. Bot., 190. Another [involucre] at the base of each of the partial umbels or umbellules.
