ClipArt ETC
This cluster of flowers is also known as an umbel.

Flower

This cluster of flowers is also known as an umbel.

Part of stem, leaf and umbel of Poison-Hemlock.

Poison Hemlock

Part of stem, leaf and umbel of Poison-Hemlock.

Umbel of Poison-Hemlock.

Poison Hemlock

Umbel of Poison-Hemlock.

Magnified flower of Poison-Hemlock.

Poison Hemlock

Magnified flower of Poison-Hemlock.

Magnified fruit of Poison-Hemlock.

Poison Hemlock

Magnified fruit of Poison-Hemlock.

Magnified fruit of Poison-Hemlock, cut in half.

Poison Hemlock

Magnified fruit of Poison-Hemlock, cut in half.

The common names of heracleum are cow parsley and cow parsnip. The sibiricum variety has yellowish flowers. The umbels are large.

Umbel of Heracleum Sibiricum

The common names of heracleum are cow parsley and cow parsnip. The sibiricum variety has yellowish flowers.…

"Diagrams of inflorescence. A, panicle; B, raceme; C, spike; D, head; E, umbel." -Bergen, 1896

Inflorescence

"Diagrams of inflorescence. A, panicle; B, raceme; C, spike; D, head; E, umbel." -Bergen, 1896

An umbel arrangement of flowers.

Umbel

An umbel arrangement of flowers.

Racemes clustered in racemes, making a compound raceme, or umbel as in this Caraway.

Compound Umbel

Racemes clustered in racemes, making a compound raceme, or umbel as in this Caraway.

"Umbel is formed when the secondary axes originate from the same point on the stem, and rise to nearly the same height. The whole is called a universal umbel. If the secondary axes develop tertiary ones in the same manner, each is called a partial umbel."—Darby, 1855

Umbels

"Umbel is formed when the secondary axes originate from the same point on the stem, and rise to nearly…