Iris tenuissima

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Iris tenuissima
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Iridaceae
Subfamily: Iridoideae
Tribe: Irideae
Genus: Iris
Subgenus: Limniris
Section: Limniris
Species: I. tenuissima
Binomial name
Iris tenuissima

Iris tenuissima is a species of iris known by the common name longtube iris.

It is endemic to California, where it is a common wildflower in the woodlands and forests of the northern part of the state.


This rhizomatous perennial herb produces narrow leaves and an erect inflorescence bearing two iris flowers. The flower has a long tubular throat which may exceed 5 centimeters in length before it opens into white, purple, or reddish-brown streaked tepals.


  • Iris tenuissima ssp. purdyiformis — affinity to serpentine soil.
  • Iris tenuissima ssp. tenuissima

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