Perfect Flower. A flower complete in all the common parts.
Staminate. With stamens and without pistils.
Pistillate. With pistils and without stamens.
Polygamous. Pistillate, staminate, and perfect flowers, on the same or on different plants.
Claw. The narrow or stalk-like base of some petals.
Pedicel. The stalk of a flower in a cluster.
Raceme. A flower-cluster in which the flowers are borne along the flower-stalk on pedicels of nearly equal length.
Spike. A flower-cluster in which the flowers have no pedicels and are arranged more or less closely along the flower-stalk.
Bracts. Small scalelike formations.
Involucre. A circle of bracts below a flower-cluster.