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Iris ser. Longipetalae is a series of the genus Iris, in Iris subg. Limniris.

Iris ser. Longipetalae
Iris missouriensis
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Iridaceae
Genus: Iris
Subgenus: Iris subg. Limniris
Section: Iris sect. Limniris
Series: Iris ser. Longipetalae
Species

William Rickatson Dykes in his book 'Handbook of Garden Irises' (of 1924) includes 4 species in his Iris longipetala subsection; including Iris longipetala (Herbert), Iris missouriensis Nuttall, Iris arizonica (Dykes, 1917) and Iris montana (Nuttall).[1] Iris arizonica and Iris montana have since been classified as synonyms of Iris missouriensis.[2]

The series was then first classified as a 'series' by Diels in 'Die Natürlichen Pflanzenfamilien' (Edited by H. G. A. Engler and K. Prantl) in 1930. It was further expanded by Lawrence in Gentes Herb (written in Dutch) in 1953.[3][4]

There is still a lot of confusion within the series.

The British Iris Society only lists Iris missouriensis and classes Iris longipetala as a variant of Iris missouriensis.[5] The American Iris Society and Pacific Iris Society lists three species; Iris longipetala (Herbert), Iris missouriensis (Nuttall) and Iris pariensis (Welsh).[6][7][8] But Plant List regards Iris pariensis as a synonym of Iris missouriensis.[2] Iris pariensis was found by Stanley Larson Welsh in Utah and published in 'Great Basin Naturalist' 46(2): 256 in 1986.[9]

The series has species are native to western North America,[6] seen in Washington (state), Oregon and California.[10]

They prefer to have moisture in the spring and a dry period during the summer. They also do not like root disturbance hence they are difficult to grow as nursery plants. They are also rarely grown in the UK.[10] The species have thick rhizomes,[8] fruiting stems (that follow the flowers) that stay on the plant until the next growing season, (or longer)[6][8] a stigma with 2 teeth (or lobes)[8] and seed capsules with 6 ribs and taper into points on the ends.[6][8]


References


  1. Dykes, William (2009). "Handbook of Garden Irises" (PDF). beardlessiris.org (The Group for Beardless Irises). Retrieved 1 November 2014.
  2. "Iris missouriensis Nutt. is an accepted name". theplantlist.org. 23 February 2012. Retrieved 3 November 2014.
  3. James Cullen, Sabina G. Knees, H. Suzanne Cubey (Editors) The European Garden Flora Flowering Plants: A Manual for the Identification, p. 647, at Google Books
  4. "Iris ser. Longipetalae (Diels) G.H.M. Lawrence". data.canadensys.net. Retrieved 1 November 2014.
  5. Austin, Claire (2005). Irises A Garden Encyclopedia. Timber Press, Incorporated. p. 275. ISBN 978-0881927306.
  6. "Series Longipetalae (Diels) Lawrence". wiki.irises.org (American Iris Society). 2011-06-16. Retrieved 1 November 2014.
  7. "Summary of the Genus Iris" (PDF). pacificbulbsociety.org. Retrieved 1 November 2014.
  8. James Cullen, Sabina G. Knees, H. Suzanne Cubey (Editors) The European Garden Flora Flowering Plants: A Manual for the Identification, p. 254, at Google Books
  9. "Iridaceae Iris pariensis S.L.Welsh". ipni.org (International Plant Names Index). Retrieved 3 November 2014.
  10. Stebbings, Geoff (1997). The Gardener's Guide to Growing Irises. Newton Abbot: David and Charles. pp. 17. ISBN 0715305395.




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