Iris Species Database: Iris versicolor




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Iris Species Database:  Iris versicolor
 



 Botanical Name: 

 

Iris versicolor

 




 D. Kramb 

 08-NOV-03 

       Botanical Synonyms: 

 

 Classification: 

 

Beardless, Apogon, Laevigatae

 




 D. Kramb 

 08-MAY-04 

 Common Names: 

 

Blue flag, Northern blue flag

 




 D. Kramb 

 08-MAY-04 

 Chromosome Count: 

 

2n=108

 




 D. Kramb 

 08-MAY-04 




 General Description: 

 

As the botanical name implies, this species varies greatly in flower color. It generally grows from 18" to 30" tall, and prefers moist conditions.

 




 D. Kramb 

 09-MAY-04 

 Distinguishing Features: 

 

 Preferred Habitat: 

 

Requires moisture, similar to Louisiana irises.

 




 D. Kramb 

 08-MAY-04 

 

 

Swamps, meadows, and wet shores.

 




 D. Kramb 

 09-MAY-04 

 Hardiness: 

 

At least Zones 3-8, probably 2-10.

 




 D. Kramb 

 08-MAY-04 




 Native Range: 

 

Northeastern USA, and north into Canada

 




 D. Kramb 

 08-MAY-04 

 Status in the Wild: 

 

 Commercial Availability: 

 

Readily available from nurseries specializing in pond plants.

 




 D. Kramb 

 08-MAY-04 




 Sources Cited: 

 

"Iris" book by Fritz Kohlein.

 




 D. Kramb 

 08-MAY-04 

 

 

"The Gardener's Iris Book" by William Shear.

 




 D. Kramb 

 09-MAY-04 

     Additional Comments: 

 

Hybridizes readily with other members of the Laevigatae series. Crosses with Iris virginica are known as Iris x robusta. Crosses with Iris laevigata are known as versilaevs.

 




 D. Kramb 

 09-MAY-04 

 

 

Believed now to be a hybrid that arose naturally when glaciers advanced southward pushing Iris setosa into contact with Iris virginica. The resultant Iris versicolor retained a full set of chromosomes from each parent, giving it the highest chromosome number of any iris.

 




 D. Kramb 

 09-MAY-04 




Copyright 2003, 2004, SIGNA (Species Iris Group of North America). Please contact us for permission to use any material contained within this database. Report any problems with the site to Dennis Kramb.





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