A flower cluster in which stalks of nearly equal length arise from a common point, like umbrella ribs.

A type of inflorescence characteristic of plants like carrots and parsley.

Shaped like an umbel or umbrella.

Having small umbels; describes a compound umbel composed of smaller umbels.

A secondary or small umbel within a compound umbel.

A diminutive umbel, often found as a branch of a larger umbel.

A central, raised area or bump, often on seeds or shields.

Having a central raised area or knob, like an umbo.

A protective sheath or outer layer of certain plant organs.

Top-shaped or inverted cone-like in form.