Iris Rhizome Comparisons
This page is dedicated to showing the many different types and forms of iris rhizomes. With bulbous irises being an exception, all irises have some form of a rhizome. Some are quite obvious, as is the case with Bearded irises; others looks like any other massed perennial roots, but on a closer looks shows the rhizome.

Tall Bearded rhizome

Tall Bearded rhizome

And a few bulbs....

Iris barbatula bulb

Iris bucharica bulb