Shaped like a brush or broom, with an axis that bears at its apex a…

(In pollen) the ridges separating the empty spaces.

Resembling courses of bricks; with bricklike markings, mostly employed for epidermal cell shapes [unusual term].…

Minutely muricate.

(Of spore wall) ridges.

(Of a structure) arranged in many rows (e.g. ovules on a placenta).

(Of divided leaves) with the lobes or divisions held in several planes.

Split into numerous lobes. Many-cut.