Definitions for "Granulum"
(pl.granula, adj.granulate, granulose) (sensu Erdtman, 1952) A very small and rounded element of the sexine/ ectexine that is less than 1µm in all directions. Comment: A granulum is the diminutive for granum. See also: scabrate. Granum (pl. grana) ( Potonié, 1934) The combined elements gemmae and verrucae.