It is a compound umbel with a many clusters of flowers.

This plant has white flowers in large compound umbels.

These plants all have white flowers in large compound umbels.

The inflorescence is a compound umbel of flowers that extends out horizontally.

Yellow flowers in compound umbels appear from late April to June.

Flowers are pale greenish yellow produced in large compound umbels.

The inflorescence is a compound umbel of many small, white flowers.

The inflorescence is a compound umbel of tiny flowers each with five pointed white petals.

The flowers are yellow in color and borne on compound umbels.

The flowers are characterized as the inflorescence: a compound umbel.