Asteraceae Glossary

Living or growing for only one year or season.

A plant that normally requires two seasons to complete its life cycle, growing usually as a rosette in the first season and producing flowers and fruits and then dying in the second season.

The petals, collectively, as a unit.

More or less flat-topped, indeterminate inflorescence, the outer flowers open first.

Small or reduced flowers; often found in grasses and the Asteraceae family.

Not opening to release seeds when maturity is reached.

Center flowers open last in an inflorescence; the growth of the plant's main axis is not stopped with the opening of the first buds.

A series of bracts beneath or around a flower or cluster of flowers. 

An indeterminate inflorescence whose primary axis bears branches of pedicelled flowers.

A plant that lives three or more years.

A flower that has both functioning pistils and stamens.

Covered with hairs; ex. Stachys, Pulsatilla.

The expanded end of a pedicel (stalk) that holds the flowers or floral organs.

Without a petiole (leaf) or pedicel (stalk of a flower).

Bears the buds, leaves and flowers of a plant.

A main, deep-growing root that produces lateral roots.