Biology:Iris graminea

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Short description: Species of iris

Iris graminea
Iridaceae - Iris graminea.JPG
Scientific classification edit
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. Spuriae
Species:
I. graminea
Binomial name
Iris graminea
Synonyms[1]
  • Chamaeiris graminea (L.) Medik.
  • Xiphion gramineum (L.) Schrank, Flora 7(2 Beibl.): 17 (1824).
  • Limniris graminea (L.) Fuss, Fl. Transsilv.: 637 (1866).
  • Xyridion gramineum (L.) Klatt, Bot. Zeitung (Berlin) 30: 500 (1872).
  • Iris compressa Moench, Methodus: 529 (1794), nom. Illeg.
  • Iris suavis Salisb., Prodr. Stirp. Chap. Allerton: 44 (1796).
  • Iris sylvatica Balb. ex Roem. & Schult., Syst. Veg. 1: 476 (1817).
  • Iris adamii Willd. ex Link, Jahrb. Gewächsk. 1(3): 72 (1820).
  • Iris bayonnensis Gren. & Godr., Fl. France 3: 243 (1855).
  • Iris pseudocyperus Schur, Enum. Pl. Transsilv.: 657 (1866).
  • Iris pseudograminea Schur, Enum. Pl. Transsilv.: 928 (1866).
  • Iris lamprophylla Lange, Bot. Tidsskr. 13: 17 (1882).
  • Iris nikitensis Lange, Bot. Tidsskr. 13: 17 (1882).
  • Xiphion collinum N.Terracc.
  • Xiphion gramineum subsp. gramineum (L.) Schrank
  • Xiphion gramineum subsp. silvaticum (Balb.) Arcang.
Iris graminea – MHNT

Iris graminea is a species of flowering plant belonging to the subgenus Limniris of the genus Iris, in particular the series Spuriae. It is a rhizomatous perennial, with purple or violet blue flowers almost hidden by narrow, grass-like leaves, and a plum scented fragrance. It is cultivated as an ornamental plant in temperate regions. It has several common names, including grass-leaved flag, grass leaved iris, plum iris and plum tart iris (due to its scent). This species naturally occurs in the southern half of Europe, from Spain and France in the West to Russia and the Caucasus in the East.

Description

Iris graminea has slender, short, hard rhizomes.[2] The plant has narrow grass-like foliage[3] and can grow up to 30–100 cm (12–39 in) long and 0.5–1.5 cm wide.[4] They can have many branches creating dense tufts, clumps or tussocks of plants.[5]

The flower has bright purple flowers and shiny, green leaves.[6] Some plants can have dark green leaves.[7][8] They have strongly visible longitudinal veins.[9] The leaves are longer than the flowering stems.[10][11][12] After the plant has flowered, the foliage has the tendency to extend.[13] Later, the deciduous foliage dies back during the winter.[6]

Iris graminea has a flattened stem,[3] that grows up to 10–60 cm (4–24 in) long.[14][15] The stems have 1–2 spathes (leaves of the flower bud),[16] which are unequal in size.[17] The lower spathe is larger and rather leaf-like.[17] The stems hold 1–2 terminal (top of stem) flowers,[3][18][11] blooming in spring and summer, between May and June.[19][20] The stems are normally, unbranched,[21] but (if they have a second flower), the pedicel, is up to 6 cm long.[22]

It 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] The falls have a long haft or claw, (section closest to the stem) and a small rounded or oval blade.[16] They are 3–5 cm (1–2 in) long.[23] The centre of the blade has a pale yellow[5][13] or white central area,[24] which is veined with violet,[11][18] purple,[21] or blue.[25][11] Some references describe a dark purple area with white veining.[26] The claw is sometimes winged and tinged with green or brown,[27] or veined deep reddish-purple. The erect standards are purple blue,[28] purple,[11] or red-violet. They are 2–5 cm (1–2 in) long, with green or brown shade at the base.[23] It has a long and arching purple style branch[16][27] (that is long as the haft), and has a dark purple centre stripe.[28] They have a brown base.[12]

It has an ovary with double ridges, a 2-pointed stigma and pollen that is orange-red.[3] It also has a short perianth tube.[22] After the iris has flowered, it produces a 3–4 cm (1–2 in) long seed capsule,[26] which has a narrowed point.[7] Inside the capsule are pear-shaped seeds,[22][7] which are slightly compressed and flattened.[7]

The flower has been described as having a fruity scent.[4]

Genetics

As most irises are diploid, having two sets of chromosomes, this can be used to identify hybrids and classification of groupings. Its chromosomes have been counted several times, including 2n=34, Simonet 1932; 2n=34, Lenz 1963; 2n=34, Popova, M., & I. Cesmedziev, (1975 & 1976); 2n=34, Colasante & Sauer, 1993; 2n=28, 34, 36, Lovka, 1995 and 2n=34, Dobeš et al., 1997.[16] It is generally published as 2n=34.[27][29][30]

Taxonomy

It is known as iris à feuilles de graminées or iris de Bayonne in France ,[31] and Giaggiolo susino in Italy.[32][33] It is known as kosaciec trawolistny in Polish, and iris trávolistý in Czech and Slovak.[34] and it is known as zlakovidny iris in Russia,[35][24][36] and gräsiris in Swedish,(meaning grass iris).[37] The Latin specific epithet graminea refers to grassy due to the grass-like leaves.[38] It has the common names grass-leaved flag (in the US)[39][14] or grass leaved iris,[18][16] plum iris,[40][41] and plum tart iris[4][6][12] or plum scented iris (because of the scent).[19][28][15]

It was originally published and described by Carl Linnaeus in Species Plantarum Vol. 1 page 39 on 1 May 1753.[29][42][43] It was later published by Ker-Gawler in Curtis's Botanical Magazine Vol. 18 page 681 in 1803.[16] Then by B. Fedtsch in Flora of SSSR Vol. 4 page 529 in 1935.[29] It was verified by the United States Department of Agriculture's Agricultural Research Service on 4 April 2003 and then updated on 1 December 2004.[42] It is an accepted name by the RHS, and it gained the RHS's Award of Garden Merit.[19][18]

Distribution

It is native to temperate areas of Europe, and Asia.

It is widespread from Spain to Russia. Within Asia, it is found in the Caucasus regions,[19] of Georgia, and the Russian Federation,[5][27] (in Ciscaucasia and Dagestan). Also in Turkey (in Asia Minor).[35][29] Within Europe, it is found in Austria, Bulgaria,[44] the Czech Republic and Slovakia, (in Moravia), ex-Yugoslavia, France, Germany, Hungary, Italy, Poland, Romania, Spain, Switzerland, and Ukraine ,[8][40][42](in Crimea,[2][15][24]). It may be naturalized in the Moravia region of the Czech Republic,[26] and in Germany.[21]

Habitat

It is found growing in scrubland, grass lands, meadows (or pastures),[37][34][5][40] open woods,[21] and in rocky or gravelly soils of the mountains.[35]

Conservation

I. graminea is an 'endangered species' in the Czech Republic and Slovakia,[45] it is also listed as 'vulnerable' in Hungary.[26] Within Saxony (Germany), it is listed as rare.[40] I. graminea is thought to be extinct in Poland, but was formerly found near Cieszyn.[46] It has been listed in various Red Data Books.

Cultivation

The flower of the Iris graminea

I. graminea is hardy to between USDA Zones 3 and 9.[19][14][15] It is hardy to Europe Zone H2.[23] It can survive temperatures as low as −20 °C.[21] It is hardy in most places of the UK. During the winter, the foliage dies back, leaving the rhizome under the ground. In very cold climates, a mulch may help the plant survive colder temperatures.[6]

It can be grown in normal garden conditions.[3][47] They prefer neutral or slightly acidic (or lime-free),[11] well drained,[6] and fertile (or humus rich) soils.[25][12] They can tolerate dry soils,[39] or clay and heavy soils, but it prefers damp soils.[25][19][12] They prefer positions in full sun,[14][41] and can tolerate partial shade.[25][19][6] It requires adequate watering during growth,[14] such as a moist spring and then drier during the summer.[6] Mature plants can tolerate drought periods.[13]

It can be fertilized in early spring and after flowers have bloomed. They can be grown in a front of a mixed border,[3][47] or rockery.[37][8][11] As well as being naturalized in the garden,[48] they can be also grown in containers, as long as they are well watered.[25] The flowers can be used in bouquets, so can also be grown in a cutting garden.[28][10] They do not like root disturbance,[13] similar to other spuria irises.

It suffers from no serious insect or disease problems. Crown rot is an infrequently occurring disease problem. It is susceptible to certain viruses, such as bacterial leaf blight, soft rot, rhizome rot, leaf spot, rust, viruses and scorch.[39] It is also can be susceptible to damage by insects such as; Iris borer, verbina bud moth, white flies, iris weevil (Mononychus punctumalbum),[49] thrips, slugs, snails, aphids and nematodes.[39] It can also tolerate damage from deer. Aphid Aphis newtoni can be found on the plant.[50][13]

The iris has been cultivated since at least 1568.[21][7] It was first grown in Cambridge Botanic Garden in 1733,[2][34] where it was labelled as narrow leafed plum scent iris.[2] For many years it was grown in St. Petersburg Botanical Garden,[7] and the botanical garden of Ufa.[9]

It is the most commonly grown Iris spuria species,[3][28] and can be easily found in plants nurseries,[21] though it is most commonly known in Europe.[19]

Propagation

It can also be propagated by division or by seed growing. It rarely needs lifting and dividing. Large clumps of mature plants can be lifted between mid-summer to early autumn, then divided before being replanted.[3][39] As it does not like root disturbance,[13] so seed growing is preferred. If re-planted, they can take a year to 'settle' before beginning to bloom again.[21]

Seeds are collected from the pods after flowering. Seeds are then sown in containers in a cold frame in autumn,[39] or between September and May. Seeds should be kept moist for about 2–4 weeks and also warm (at about 15–20 °C). Then temperatures between −4 °C and + 4 °C suspend for 4–6 weeks. These conditions are best reached at the autumn sowing outdoors. Seed trays should then be kept at temperatures of 5 °C to + 10 °C after the cooling period, for a few weeks. In the wild, these freezing and heat period) conditions take place naturally. The plants need to grow and mature for about 2–3 years before they begin to flower.[13][41]

Hybrids and cultivars

Iris graminea has the following known varieties: 'Achtaroffii', 'Adami', 'Colchica', 'Graminea Lamprophylla', 'Graminea Sylvatica', 'Graminea latifolia', 'Gravenia', 'Hort's variety', and 'Pseudocyperus'.[16] The latter of these has ranges from the Czech Republic, Romania, and Slovakia.[15] Pseudocyperus has broad leaves, but no scent.[4]

References

  1. ↑ "Iris graminea L. is an accepted name". theplantlist.org (The Plant List). 23 March 2013. http://www.theplantlist.org/tpl1.1/record/kew-321895. 
  2. ↑ 2.0 2.1 2.2 2.3 British Iris Society (1997) A Guide to Species Irises: Their Identification and Cultivation at Google Books
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Dykes, William. "Dykes on Iris". beardlessiris.org (The Group for Beardless Irises). http://www.beardlessiris.org/reviews/dykes%20on%20irises%20-%20part1.pdf. 
  4. ↑ 4.0 4.1 4.2 4.3 Stephen Lacey Scent In Your Garden, p. 79, at Google Books
  5. ↑ 5.0 5.1 5.2 5.3 "Iris graminea". encyclopaedia.alpinegardensociety.net. http://encyclopaedia.alpinegardensociety.net/plants/Iris/graminea. 
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 "Iris graminea". wildgingerfarm.com. http://wildgingerfarm.com/plant-list/plants-i/iris-graminea.html. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 "Irises section Ksiridion or Spur-iris sredneroslye". flower.onego.ru. http://flower.onego.ru/other/iris/iris_ss.html. 
  8. ↑ 8.0 8.1 8.2 "Spuria iris". flowerlib.ru. http://flowerlib.ru/books/item/f00/s00/z0000035/st029.shtml. 
  9. ↑ 9.0 9.1 "SCIENTIFIC REPORTS Samara Bend. – T. 16, № 3 (21). – S. 518–531. EN Mammoth * COLLECTION IRIS natural flora, Introdutciruemyh in the Botanical Garden Samara State University". ssc.smr.ru. 2007. http://www.ssc.smr.ru/media/journals/samluka/2007/16_3_10.pdf. 
  10. ↑ 10.0 10.1 Margery Fish An All the Year Garden, p. 62, at Google Books
  11. ↑ 11.0 11.1 11.2 11.3 11.4 11.5 11.6 Cassidy, George E.; Linnegar, Sidney (1987). Growing Irises (Revised ed.). Bromley: Christopher Helm. ISBN 978-0-88192-089-5. 
  12. ↑ 12.0 12.1 12.2 12.3 12.4 Stebbings, Geoff (1997). The Gardener's Guide to Growing Irises. Newton Abbot: David and Charles. p. 57. ISBN 978-0715305393. https://archive.org/details/gardenersguideto00steb. 
  13. ↑ 13.0 13.1 13.2 13.3 13.4 13.5 13.6 "Iris graminea". missouribotanicalgarden.org. http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b678. 
  14. ↑ 14.0 14.1 14.2 14.3 14.4 "PlantFiles: Grass-leaved Flag, Fleur-de-lis, Sword Lily, Plum Scented Iris". davesgarden.com. http://davesgarden.com/guides/pf/go/53800/#b. 
  15. ↑ 15.0 15.1 15.2 15.3 15.4 Kramb, D. (20 September 2004). "Iris graminea". signa.org (Species Iris Group of North America). http://www.signa.org/index.pl?Iris-graminea. 
  16. ↑ 16.0 16.1 16.2 16.3 16.4 16.5 16.6 Laurin, Terry (11 October 2014). "(SPEC) Iris graminea L.". wiki.irises.org (American Iris Society). http://wiki.irises.org/bin/view/Spec/SpecGraminea. 
  17. ↑ 17.0 17.1 Dykes, William (2009). "Handbook of Garden Irises". beardlessiris.org (The Group for Beardless Irises). http://www.beardlessiris.org/reviews/handbook%20of%20garden%20irises%20-%20dykes.pdf. 
  18. ↑ 18.0 18.1 18.2 18.3 18.4 "Iris graminea". Royal Horticultural Society. http://apps.rhs.org.uk/plantselector/plant?plantid=6226. [yes|permanent dead link|dead link}}]
  19. ↑ 19.0 19.1 19.2 19.3 19.4 19.5 19.6 19.7 "Iris graminea (Plum Scented Iris)". plantdelights.com. http://www.plantdelights.com/Iris-graminea-for-sale/Buy-Plum-Scented-Iris/#sthash.ZrqZxskW.dpuf. 
  20. ↑ "Plant of the Month for March 2020 | North American Rock Garden Society". https://www.nargs.org/plant-of-the-month/iris-graminea. 
  21. ↑ 21.0 21.1 21.2 21.3 21.4 21.5 21.6 21.7 "Chapter II iris clump and other (part3)". irisbotanique.over-blog.com. http://irisbotanique.over-blog.com/article-chapitre-ii-iris-a-touffe-et-autre-partie3-106518511.html. 
  22. ↑ 22.0 22.1 22.2 "Lat. Iris". agbina.com. http://www.agbina.com/site.xp/053051050124052052055.html. 
  23. ↑ 23.0 23.1 23.2 James Cullen, Sabina G. Knees and H. Suzanne Cubey (Editors) The European Garden Flora Flowering Plants: A Manual for the Identification (2011) , p. 348, at Google Books
  24. ↑ 24.0 24.1 24.2 "Spurius Irises, History, Groups And Types, Cultivation And Maintenance". liveinternet.ru. 20 January 2013. http://www.liveinternet.ru/users/okluba/post257505306. 
  25. ↑ 25.0 25.1 25.2 25.3 25.4 "Spuria Irises". herbs2000. http://www.herbs2000.com/flowers/i_ispuria.htm. 
  26. ↑ 26.0 26.1 26.2 26.3 Hoskovec, Ladislav (15 July 2007). "Iris graminea". botany.cz. http://botany.cz/cs/iris-graminea/. 
  27. ↑ 27.0 27.1 27.2 27.3 "Iris summary". pacificbulbsociety.org. 14 April 2014. http://www.pacificbulbsociety.org/pbswiki/files/Iris/Iris_Summary.pdf. 
  28. ↑ 28.0 28.1 28.2 28.3 28.4 "The Small Spurias". kcis.org. http://www.kcis.org/kciseducation/kcissmallspurias.html. 
  29. ↑ 29.0 29.1 29.2 29.3 Andreĭ Aleksandrovich Fedoro (Editor) Flora of Russia, Volume 4, p. 440, at Google Books
  30. ↑ Stolley, Gregor. "The genus Iris in Germany (Gregor Stolley)". offene-naturfuehrer.de. http://offene-naturfuehrer.de/web/Die_Gattung_Iris_in_Deutschland_(Gregor_Stolley). 
  31. ↑ "Iris graminea L., 1753". inpn.mnhn.fr. http://inpn.mnhn.fr/espece/cd_nom/103738?lg=en. 
  32. ↑ "Giaggiolo susino [ Iris graminea "]. sentierinatura.it. http://www.sentierinatura.it/easyne2/LYT.aspx?IDLYT=2269&ST=SQL&SQL=ID_Documento=1885&code=SentieriNatura. 
  33. ↑ "Iridaceae Iris graminea L.". luirig.altervista.org. http://luirig.altervista.org/flora/taxa/index1.php?scientific-name=iris+graminea. 
  34. ↑ 34.0 34.1 34.2 "Bezkartáčkaté irises". zahradaweb.cz. 5 March 2012. http://zahradaweb.cz/bezkartackate-kosatce/. 
  35. ↑ 35.0 35.1 35.2 "Subgenus Xyridion (Xyridion) – Wood-iris rhizome". flower-iris.ru. http://flower-iris.ru/en/knigi-pro-iridariy/zaglyanut-v-knigu/63/. 
  36. ↑ "Irises – Forum". tehnika.clan.su. 21 May 2009. http://tehnika.clan.su/forum/29-146-1. 
  37. ↑ 37.0 37.1 37.2 "Iris graminea, grass iris". konnklubb.nordicshops.com. http://konnklubb.nordicshops.com/product.html?product_id=381. 
  38. ↑ Smith, A.W.; Stearn, William T. (1972). A Gardener's Dictionary of Plant Names (Revised ed.). Cassell and Company (published 1963). p. 158. ISBN 978-0304937219. 
  39. ↑ 39.0 39.1 39.2 39.3 39.4 39.5 "Iris graminea". thegardengeeks.com. http://www.thegardengeeks.com/home/index.php?option=com_sobi2&sobi2Task=sobi2Details&catid=4&sobi2Id=8212&Itemid=132. 
  40. ↑ 40.0 40.1 40.2 40.3 Stolley, Gregor. "The genus Iris in Germany (Gregor Stolley)". offene-naturfuehrer.de. http://offene-naturfuehrer.de/web/Die_Gattung_Iris_in_Deutschland_(Gregor_Stolley). 
  41. ↑ 41.0 41.1 41.2 "Plum Iris, Iris graminea". syringa-pflanzen.de. http://www.syringa-pflanzen.de/pflaumeniris-samen.html. 
  42. ↑ 42.0 42.1 42.2 {{citation | mode = cs1 | title = Iris graminea | work = Germplasm Resources Information Network (GRIN) | url = | publisher = [[Organization:Agricultural Research ServAgricultural Research Service (ARS), United States Department of Agriculture (USDA) | access-date = 11 March 2015 }}
  43. ↑ Iridaceae Iris graminea L.. 1. ipni.org (International Plant Names Index). http://www.ipni.org/ipni/idPlantNameSearch.do?id=438663-1. Retrieved 4 February 2015. 
  44. ↑ Georgieva, S.; Koeva, K.; Kalachevaa, D. (15 April 2014). "Floristic Characteristics of Chirpanskata Gora Preserve". Biotechnology & Biotechnological Equipment 24 (1): 186–199. doi:10.1080/13102818.2010.10817836. 
  45. ↑ Grulich, Vít (2012). "Red List of vascular plants of the Czech Republic: 3rd edition". Preslia 84: 631–645. http://www.P123Grulich.pdf. Retrieved 3 September 2015. [yes|permanent dead link|dead link}}]
  46. ↑ "Iris fancy". atlas-roslin.pl. http://www.atlas-roslin.pl/gatunki/kosacce_irysy_ogrodowe.htm. 
  47. ↑ 47.0 47.1 Benjamin Yoe Morrison Garden irises, p. 7, at Google Books
  48. ↑ William Robinson The Wild Garden: Expanded Edition (2009), p. 267, at Google Books
  49. ↑ "Mononychus punctumalbum : Iris Weevil | NBN Atlas". https://species.nbnatlas.org/species/NBNSYS0000025339. 
  50. ↑ R. L. Blackman, Victor F. Eastop Aphids on the World's Herbaceous Plants and Shrubs, p. 553, at Google Books

Sources

External links

Wikidata ☰ Q161412 entry



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