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Iridaceae: Iris Family

The Iridaceae family has about 1500 species in 80 genera (Carr). A lot of the value of the Iridaceae comes from the ornamental species. The flowers of Iris and Gladiolus have always been a favorite in the horticultural trade. Most of the species are distributed in South Africa and tropical America.


Systematics: Look for disticous leaves that sheath and are equitant. They usually have 2 undifferentiated whorls with 3 distinct stamens and 3 style branches Often the stigmas are petaloid. There are also 3 petals and 3 sepals. Iridaceae fruit is a loculicidal capsule with seeds.

Specimens List

Pale Yellow Iris (Iris pseudacorus)

Also known as Yellow Flag it is an invasive plant in the southern U.S. Don't mistake it for a cattail though.



Floral Diagram

Floral Formula


Gladiolus spp

Most of the 260 species in the genus are native to South Africa.


Genus Iris

Has from 200-300 species. This dates from 1753, when it was coined by Swedish botanist, Linnaeus.





 

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This is an example of a species from the Iridaceae family: Pale Yellow Iris

 

 
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