Species Iris Group of North America

What's An Iris? What's SIGNA? Seed Exchange
Publications* Species Database Spec-X IOTM
Upload Info
Upload Photo
Iris rossii

Botanical Name: Iris rossii (added by D. Kramb, 15-JAN-06)

Botanical Synonyms:




Common Names:


Chromosome Count:


General Description:

Iris rossii is a short and slender species. The flower are usually shades purple or violet, though there is white form too. The pure white form I. rossii f. alba is known only from Korea, however, white color forms are rarely found in Japan. Most part of the roots which are hairy, very long and reddish maroon in color cannot take up water, it is only the root tips can absorb water. Accidental cutting of the root tips creates difficulty in transplanting, therefore propagation from the seed is best. The species grows on dry banks and in scrub due to the strange characteristics of the roots. It flowers in April and produces rounded stemless capsules in July. It is said to be one of the zoochory plants because ants like the seeds and carry them away. (D. Kramb, 15-JAN-06)

Distinguishing Features:


Preferred Habitat:

It grows on dry sunny hillsides and meadows at forest edges in south Japan and part of western Japan. (D. Kramb, 15-JAN-06)



Native Range:

Japan, Korea, at least. (D. Kramb, 15-JAN-06)

Status in the Wild:

On the endagered species list in Japan. (D. Kramb, 15-JAN-06)

Commercial Availability:


Sources Cited:

Info entered on 15-JAN-06 comes from a Japanese website with the address http://www.kamoltd.co.jp/kyokai/English/wild_iris.html (D. Kramb, 15-JAN-06)

Additional Comments:


Where to buy it:

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

© 1999-2020, SIGNA. Material from this database may be freely used for non-profit purposes, provided that you give proper credit to the original photographer or contributor. For-profit organizations should contact the photographer or contributor directly to request permission. SIGNA may or may not have contact information for those individuals. Number of Species: 433, Number of Photos: 2121

© 2024, SIGNA. For general inquiries about SIGNA please contact Rodney Barton. Please report technical problems to dkramb@gmail.com.
* Some important new updates were added January 2024 indicated by the asterisk in the header. Please check them out!