Section A. Structure and Specialized Characters:
IV. Buds

A. Bud Parts

Bud Primordium. Meristematic tissue that gives rise to a lateral bud.

Flower Primordium. Meristematic tissue that gives rise to a flower.

Leaf Primordium. Meristematic tissue that gives rise to a leaf.

Promeristem. Apical growing or meristematic tissue that gives rise to other bud parts.

Scale. Protective leaf on outside of bud.

B. Bud Types Figure 6-2-3)
(Classification based on position and arrangement)

Accessory. Buds lateral to or above axillary buds.

• Collateral. Bud(s) lateral to axillary bud.
• Superposed. Bud(s) above axillary bud.

Axillary or Lateral. In axils of leaves or leaf scars.

Infrapetiolar or Subpetiolar. Axillary bud surrounded by base of petiole.

Pseudo-terminal. Bud appearing apical but is lateral near apex, developing with death or nondevelopment of terminal bud.

Terminal. At apex or end of stem.

C. Bud Structural Types
(Classification based on composition and cover)

Flower. Contains flower primordia; will give rise to one or more flowers.

Leaf. Contains leaf and stem primordia; will give rise to branch with leaves.

Mixed. Contains flower, leaf, and stem primordia; will give rise to branch with leaves and flower(s).

Naked. Shoot and/or flower primordia not surrounded by scales.

Protected. Shoot and/or flower primordia surrounded by scales.