Glossary

Achene : A small, dry, hard one-locular, one-seeded closed fruit with a thin pericarp, derived from a one-carpellate ovary.

Biennial : Plant with life cycle completed in two years or seasons.

Calyx : The usually green, outer whorl or series of whorls surrounding flower petals.

Deciduous : Not persistent or evergreen.

Eciliate : Without hairs arranged on the edge of a flattened structure such as a leaf or petal.

Glaucous : Covered with a fine, waxy, removable powder that imparts a whitish or bluish cast to the surface.

Inflorescence : The flowering section of a plant.

Lenticels : A lens-shaped, biconvex spot on the surface of a plant, which serves as a pore.

Monotypic : Having only one representative, as a genus with a single species.

Non-ionic surfactant : A surface active agent that reduces the surface tension between it and another liquid not occurring in the form of ions.

Perfect flowers : Bisexual; having both male and female sexual organs.

Polygamous : Bearing unisexual and bisexual flowers on the same plant, or different individuals of the same species.

Umbel : An inflorescence with pedicels or flower stalks or both, nearly equal in length and arising from a common point; umbrella shaped.

Whorl : Three or more leaves or flowers at one node in a circle.