lusitanica) from Portugal, were crossed with Iris tingitana (from North Africa).

This was carried out by a Dutch bulb firm 'Van Tubergen' (based in Haarlem) in the 19th century.

[3] Because the bulb could be forced in a greenhouse to flower early, it was popular with florists.

This bulbous iris has narrow linear green leaves and bears largish blue to yellow to white flowers.

There are many known cultivars including;[4] Media related to Iris × hollandica at Wikimedia Commons