Species Iris Group of North America

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Iris lusitanica

Botanical Name: Iris lusitanica (added by Sean Zera, 01-MAR-11)

Botanical Synonyms:

Iris xiphium var. lusitanica, Xiphion lusitanica (Sean Zera, 01-MAR-11)


Xiphium/Xiphion (Sean Zera, 01-MAR-11)

Common Names:

Portuguese iris (Sean Zera, 01-MAR-11)

Chromosome Count:

2n=34 (Sean Zera, 01-MAR-11)

General Description:

One or two yellow flowers per stem, with long, very narrow arching leaves. (Sean Zera, 01-MAR-11)

Distinguishing Features:

Bright yellow flower distinguishes it from others in the subgenus except Iris juncea. (Sean Zera, 01-MAR-11)

Preferred Habitat:

Dry, rocky scrub. (Sean Zera, 01-MAR-11)


Hardy to at least Zone 6, though the leaves begin to emerge in fall and so can be damaged. (Sean Zera, 01-MAR-11)

Native Range:

Portugal and Spain. (Sean Zera, 01-MAR-11)

Status in the Wild:

Rare. (Sean Zera, 01-MAR-11)

Commercial Availability:


Sources Cited:


Additional Comments:

This species/variety is responsible for yellow color in Dutch hybrids. (Sean Zera, 01-MAR-11)

Where to buy it:

Sorry, but no sources of Iris lusitanica have been uploaded yet.

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