Iris schachtii

Iris schachtii is a plant species in the genus Iris, it is also in the subgenus Iris. It is a rhizomatous perennial, from central Anatolia, in Turkey. It has small, thin grey-green leaves, a short stem with 1–3 branches, which are normally, covered with a green leaf with purple staining. It has 2 or more fragrant flowers in late spring (normally between May and June), which come in shades of yellow or purple, or violet and yellow, (from greenish yellow, mid-yellow, yellow, white, off-white to yellow/brown bi-tones). It has a yellow or white with yellow-tips beard. It is cultivated as an ornamental plant in temperate regions, but prefers regions with dry, hot summers.

Iris schachtii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Iridaceae
Genus: Iris
Subgenus: Iris subg. Iris
Section: Iris sect. Iris
Species:
I. schachtii
Binomial name
Iris schachtii
Synonyms[1]

None known

Description

Similar in form to Iris attica,[2] or Iris imbricata.[3][4]:63 It may also be related to Iris taochia but it is smaller, with different leaves.[5]

It has nodular, fibrous and well branched rhizomes.[6][7] That creep across the soil to create small clumps of plants.[6][8][9]

It has small, thin leaves,[2] with are narrow.[10] The herbaceous,[7] or semi-herbaceous leaves,[6] are grey-green,[7][11] glaucous,[6] and can grow up to 22 cm (9 in) long,[6] and between 1.5 cm wide.[6][8] They are ensiform (sword shaped),[6] crescent-shaped,[12] or lanceolate (lance-shaped). They have parallel venation.

It has a short stem or peduncle, that can grow up to between 10–30 cm (4–12 in) tall.[9][13][14] It has 1–3 short branches,[6][10][15] which can be hidden by the bracts.[6]

The stem has a short, semi-sheathing leaf, and 1 stem leaf, the branches have partially inflated spathes (leaves of the flower bud),[5][6] which are 2.5–5.5 cm (1–2 in) long,[6] and generally green with purple staining. They are transparent or membranous on the edges.[5][6][8]

The stems (and the 3 branches) hold several flowers,[11] between 1 and 3,[6] but normally 2 or more.[5][7] In spring,[4]:120[7][16] in April,[7][14] or between May and June.[9][12][17] The flowers normally open in a sequence.[11]

The large flowers,[2][9] are 5–6 cm (2–2 in) in diameter,[6][7][11] come in shades of yellow or purple,[6][10][13] or violet and yellow.[11][14] Including greenish yellow,[4]:120 mid-yellow,[16] yellow,[11][12] white,[5] off-white and yellow/brown bi-tones.[5][15] The fragranced flowers, are similar in form to Iris germanica flowers.[7] Like other irises, Iris schachtii has 2 pairs of petals, 3 large sepals (outer petals), known as the 'falls' and 3 inner, smaller petals (or tepals), known as the 'standards'.[18]:17 The dark veined,[6] or brown veined,[5][12] falls are obovate or obtuse shaped, up to 4.5 cm (2 in) long and 2.5 cm wide.[6] In the middle of the falls, is a row of short hairs called the 'beard', which is yellow,[12] or white with yellow-tips.[5][6] It often is similar to the petal colour.[7][11] It has broadly elliptic-obtuse shaped standards, that narrow abruptly,[6] they are similar in shape to nautilus shells.[16]

It has a broad, smooth and 1.5 cm long ovary and a perianth tube that is 1.5–3 cm long.[6]

After the iris has flowered, it produces a seed capsule that has not been described.

Biochemistry

In 1989, a karyological study was carried out on 4 iris species in Turkey; including Iris junonia Schott et Kotschy ex Schott, Iris purpureobractea B. Matthew et T.Baytop, Iris taochia Woronow ex Grossh., and Iris schachtii. It found the chromosome counts of the iris species. The chromosome count of 2n=48.[19]

In 2014, a new technique of in vitro plant tissue culture was carried out on Iris sari and Iris schachtii.[20]

As most irises are diploid, having two sets of chromosomes, this can be used to identify hybrids and classification of groupings,[18]:18 but Iris schachtii is a tetraploid, with a count of 2n=48,[7][15] by Koca, 1989.[5]

Taxonomy

It is commonly known as 'prairie iris' in Turkey.[21]

The Latin specific epithet of schachtii refers to Wilhelm Schacht (1903–2001), alpine gardener and plant collector for the Botanischer Garten München-Nymphenburg.[22][23]

It was first published and described by Friedrich Markgraf in 'Gartenbauwissenschaft' (Gartenbauw) in Vol.22 on page 550 in 1957.[5][24][25]

It was verified by United States Department of Agriculture and the Agricultural Research Service on 4 April 2003, then updated on 3 December 2004.[25]

It is listed in the Encyclopedia of Life.[26]

Iris schachtii is an accepted name by the RHS and was last listed in the RHS Plant Finder in 2014.[27]

Distribution and habitat

It is native to temperate Asia.[6][25]

Range

It is an endemic of Turkey.[2]

Found in central Anatolia,[2][10][16] from the plateau east of Ankara,[4]:120 and between Kayseri and Malatya,[8] of Turkey.[9][13][27] Including being found near Salt Lake.

One source mentions the range goes as far as the Balkans.[14]

Habitat

It grows on the dry, rocky hillside,[8][17] slopes,[9] open steppes,[8] or mixed forests.[17] In limestone or chalky soils,[21] in full sun.[7][17]

They can be found at an altitude of 1,200–1,800 m (3,900–5,900 ft) above sea level.[8][17]

Synecology

On the steppes near Ankara, it grows with Beypazari milkvetch (Astragalus beypazaricus), dark blue bottle (Centaurea depressa), and steppe thyme (Thymus sipyleus).[21]

Conservation

Iris sari and Iris schachtii are assessed as 'least concern' (LC) within in the Red Data Book of Turkish Plants,[20] due to the widespread population.[28]

Although, this assessment could be changed due to the amount of plants being collected from the wild, for ornamental plants.[20]

IUCN Status: Unassessed[2]

Cultivation

Like the other species from Turkey Ii. junonia and purpureobractea, this is a relative newcomer to cultivation.[15]

It is hardy,[2][10][11] standing temperatures down to −20oC.[8]

It prefers to grow in well drained,[2][8] limestone soils,[12][21] in full sun.[8][9] Preferring dry,[14] hot summers.[2][8][10]

It can be grown in a rock garden,[14] alpine garden or trough.[12]

In the UK, it is best grown in bulb frame.[4]:120

Propagation

Irises can generally be propagated by division,[29] or by seed growing.[20]

Hybrids and cultivars

No known hybrids are found, but it has the potential to create fertile offspring when crossed with Iris pumila and regelia section irises.[15]

Toxicity

Like many other irises, most parts of the plant are poisonous (rhizome and leaves), and if mistakenly ingested can cause stomach pains and vomiting. Handling the plant may cause skin irritation or an allergic reaction.[30]

References
  1. "Iris schachtii Markgr. is an accepted name". theplantlist.org (The Plant List). 23 March 2012. Retrieved 10 December 2015.
  2. "Iris schachtii (purple form)". blackhalls.co.uk. Retrieved 15 January 2016.
  3. Basak Gardner & Chris Gardner Flora of the Silk Road: The Complete Illustrated Guide, p. 181, at Google Books
  4. Cassidy, George E.; Linnegar, Sidney (1987). Growing Irises (Revised ed.). Bromley: Christopher Helm. ISBN 0-88192-089-4.
  5. Laurin, Terry (8 October 2014). "(SPEC) Iris schachtii Markgraf". wiki.irises.org (American Iris Society). Retrieved 10 December 2015.
  6. British Iris Society (1997)A Guide to Species Irises: Their Identification and Cultivation, p. 51, at Google Books
  7. "Chapter I Rhizomatous Iris (Part 3)" (in French). irisbotanique.over-blog.com. Retrieved 15 January 2016.
  8. Phillips, Roger; Rix, Martyn (1991). Perennials Vol. 1. Pan Books Ltd. p. 189. ISBN 9780330327749.
  9. "Iris schachtii". wrightmanalpines.com. Retrieved 10 December 2015.
  10. Kramb, D. (5 September 2004). "Iris mandshurica". signa.org (Species Iris Group of North America). Retrieved 10 December 2015.
  11. "Iris schachtii". rareplants.co.uk. Retrieved 10 December 2015.
  12. "Iris schachtii" (in German). floramontana.de. Retrieved 15 January 2016.
  13. "Iris summary" (PDF). pacificbulbsociety.org. 14 April 2014. Retrieved 23 November 2014.
  14. "An Iris mark in Spain" (in Danish). irismarken.blogspot.com. 21 January 2015. Retrieved 15 January 2016.
  15. Waters, Tom (October 2010). "A Hybridizer's Guide to Bearded Species". telp.com. Retrieved 26 September 2015.
  16. "Iris schachtii". hillviewrareplants.com.au. Retrieved 10 December 2015.
  17. "Iris schachtii" (in Turkish). ibreliler. Retrieved 15 January 2016.
  18. Austin, Claire (2005). Irises; A Garden Encyclopedia. Timber Press. ISBN 0881927309.
  19. Koca, F. (1989). "Karyological studies on four endemic iris spp section iris in Turkey". Istanbul Universitesi Eczacilik Fakultesi Mecmuasi. 25: 1–16. Retrieved 24 November 2015.
  20. Uzun, Satı; İlbaş, Ali İrfan; İpek, Arif; Arslan, Neşet; Barpete, Surendra (2014). "Efficient in vitro plant regeneration from immature embryos of endemic Iris sari and I. schachtii". Turkish Journal of Agriculture and Forestry. Tubitak. 38: 348–353. doi:10.3906/tar-1306-47.
  21. "Arid and barren garden" (in Turkish). ngbb.org.tr. Retrieved 15 January 2016.
  22. F. Markgraf. in Die Gartenbauwissenschaft. 1957. Volume 22.pages 550–551.
  23. obituary. in Berichte der Bayerischen Botanischen Gesellschaft zur Erforschung der heimischen Flora. Munich. volume 71. pages 173–175.
  24. "Iridaceae Iris schachtii Markgr". ipni.org (International Plant Names Index). Retrieved 10 December 2015.
  25. "Taxon: Iris schachtii Markgr". ars-grin.gov (Germplasm Resources Information Network). Retrieved 10 December 2015.
  26. "Iris schachtii". eol.org. Retrieved 10 December 2015.
  27. "Iris schachtii". rhs.org.uk. Retrieved 10 December 2015.
  28. "Iris schachtii" (in Turkish). tehditaltindabitkiler.org.tr. Retrieved 15 January 2016.
  29. "How to divide iris rhizomes". gardenersworld.com. Retrieved 12 October 2015.
  30. David G Spoerke and Susan C. SmolinskeToxicity of Houseplants, p. 236, at Google Books

Sources
  • Davis, P. H., ed. Flora of Turkey and the east Aegean islands. 1965–1988 (F Turk)
  • Mathew, B. The Iris. 1981 (Iris) 34–35.

Data related to Iris schachtii at Wikispecies

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