Iris barnumiae

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Iris barnumiae
Iris barnumiae from Curtis's Botanical Magazine Vol115 1889.jpg
Illustration of the iris found in Turkey, Iraq, Azerbaijan and Iran, by Matilda Smith from Curtis's Botanical Magazine Vol.115 (series 3) in 1889
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Iridaceae
Genus: Iris
Subgenus: Iris subg. Iris
Section: Iris sect. Oncocyclus
Species:
I. barnumiae
Binomial name
Iris barnumiae
Synonyms [1]
  • Iris barnumiae subsp. barnumiae

Iris barnumiae is a species in the genus Iris ; it is also in the subgenus Iris and in the section Oncocyclus. It is a rhizomatous perennial, from Armenia, Azerbaijan, Iran, Iraq, and Turkey. It has pale glaucous green and narrow leaves, that are slightly sickle-shaped and fade soon after blooming. It has, in mid- to late spring, fragrant flowers in shades of purple, from red-purple, mulberry to purplish-violet, with a yellow tipped with purple beard. It was renamed as I. barnumiae in after a plant naming conference in 2011, but is still sometimes named as I. barnumae in some sources. It has one accepted subspecies Iris barnumiae subsp. demawendica and two forms; Iris barnumiae f. protonyma (Stapf) B.Mathew & Wendelbo and Iris barnumiae f. urmiensis (Hoog) B.Mathew & Wendelbo, which has yellow flowers. Sometimes I. barnumiae f. barnumiae is used to describe the basic form. It is rarely cultivated as an ornamental plant in temperate regions, due to its needing very dry and warm summer conditions.

Contents

Description

It has slender rhizomes, [2] [3] [4] which are up to 1 cm in diameter. [5] They do not have stolons, [5] and new growths of rhizomes, are on the sides of the old rhizomes. [2] They form tufts, [5] and spreading plants. [3] [6]

It has pale glaucous green, [2] [7] narrow leaves, [8] : 190  that can grow up to between 15 and 20 cm (6 and 8 in) long, [2] [4] and between 0.5 and 0.7 cm wide. [4] [9] The leaves all die in the summer after the flowers have bloomed, then re-appear next season. [4] [10] The foliage is very similar to Iris iberica (another Oncocyclus section iris), [3] [4] but it is less falcate, [3] [5] (or sickle-shaped). [10]

It has a slender stem or peduncle, that can grow up to between 10 and 40 cm (4 and 16 in) tall. [2] [11] [12]

The stem has spathes (leaves of the flower bud), that are 6 cm (2 in) long and are green but flushed with purple at the ends. They stay green after the flower has faded. [2]

The stems hold terminal (top of stem) flowers, blooming mid to late spring, [9] [13] between May and June. [2] [7] [14]

The fragrant flowers, [2] (similar to Lily of the Valley scent, [3] ) are 7–8 cm (3–3 in) in diameter. [3] [4] [6] They are smaller than Iris iberica, [3] and come in shades of purple, [4] [9] [14] from red-purple, [2] [12] mulberry, [15] to deep purple, [7] to purplish-violet. [16] There are yellow forms, [3] [5] [17] which are known as Iris barnumiae f. urmiensis and brownish-purple in I. barnumiae f. protonyma. [7]

Like other irises, 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'. [8] : 17  The falls are obovate or cuneate (oval or wedge shaped), 2 in (51 mm) long and 1 in (25 mm) wide. [2] They have a small, [9] darker signal area, [4] [12] [16] of almost black purple, [3] [15] and (unlike other Oncocyclus Irises) has no veining. [5] [9] [11] In the middle of the falls, is a narrow row of short hairs called the 'beard', which are white, cream, [7] or yellow, tipped with purple. [2] [4] [9] The larger and paler standards, [3] [11] are obovate or orbicular (oval or round shaped), 3 in (76 mm) long and 2.5 in (64 mm) wide. [2]

It has a horizontal, [2] [3] style branch that is 1 in (25 mm) long and reddish, [2] or brownish-yellow, [3] with red-purple dots or spots. It has triangular crests. [2] [3] The perianth tube is a similar length to the ovary. [2] The pollen (of the iris) has been counted as 108 microns (between 93 and 125). [18]

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

Biochemistry

A study was carried out in 2013, to find out what oils are contained in the rhizomes of various irises in Syria, including Iris germanica , I. barnumae, Iris bostrensis and in Iris auranitica . It found myristic acid, lauric acid, decanoic acid (capric acid), palmitic acid and methyl ester.[ citation needed ]

As most irises are diploid, having two sets of chromosomes, this can be used to identify hybrids and classification of groupings. [8] It has a chromosome count: 2n=20, [5] [10] [16] first counted by Marc Simonet in 1934, [3] and then by Avishai & Zohary in 1977. [19]

Taxonomy

The Latin specific epithet barnumiae refers to Mrs Barnum of the American Mission at Kharput, 1887. [3] [20] She was the wife of Dr Herman W. Barnum. [21] She sent specimens of the iris to Sir Michael Foster from north-eastern Asia Minor, near Lake Urumiah (in Azerbaijan). [11]

The iris was first published and also described by Sir Michael Foster and John Gilbert Baker in Gardeners' Chronicle (New Series) Vol.60 on page 142 on 18 August 1888, [3] [22] as Iris barnumi. [23]

It was also published in 1889, in 'Gardener's Chronicle' Vol.5 page 291, [24] then in Curtis's Botanical Magazine Vol.115 on tab.7050 with a colour illustration, [3] [9] in and then by Baker in 'Handbook of Iridaceae' (Handb.Irid.) Vol.21 in 1892. [22] Baker also placed the Iris, within the Regalia Section. [3] After this time, it was renamed as 'Iris barnumae'.

Then in 'The Garden' (magazine), page133 on 18 February 1893, Mr Foster disputed the placing of the iris within Regalia and placed it alongside Iris Iberica (within the Oncocyclus Section). [3] Chromosomal counts in 1977 then confirmed this. [19]

After the International Botanical Congress in Melbourne in July 2011 for IAPT (International Association for Plant Taxonomy). The ICN was ratified. [23] It stated that plants named after people (such as Rosa × toddii (Wolley-Dod in J. Bot. 69, Suppl.: 106. 1931) which was named after “Miss E. S. Todd”; the epithet is to be spelled toddiae. [25] Hence, the iris became Iris barnumiae. [23] But it is still often referred to as 'I. barnumae'. [26] [27]

It was verified as 'Iris barnumiae' by United States Department of Agriculture and the Agricultural Research Service on 8 June 2000 and then changed on 21 May 2013. [23]

It is listed in the Encyclopedia of Life, [28] and in the Catalogue of Life as 'Iris barnumiae'. [29]

Evolution and phylogeny

It has one accepted subspecies Iris barnumiae ssp. demavendica and two forms I. barnumiae f. protonyma (Stapf) B.Mathew & Wendelbo and I. barnumiae f. urmiensis (Hoog) B.Mathew & Wendelbo. [1] [3] Sometimes I. barnumiae f. barnumiae is used to describe the basic form. [5]

I. barnumae subsp. barnumiae f. urmiensis It is an accepted name by the RHS, [30] while 'I. barnumiae f. protonyma' is listed as 'unchecked'. [31]

I. barnumae subsp. barnumiae f. urmiensis was originally Iris urmiensis and it was published and described by Hoog (1865–1950) in 'Gardener's Chronicle' (series 2) in 1900 on page373. [32]

It was then published in The Garden (magazine) 17 November 1900, [2] then in the Botanical Magazine 7784 in 1901. [9]

It has 4 known synonyms, Iris barnumiae var. urmiensis (Hoog) Dykes, Iris chrysantha Baker, Iris polakii f. urmiensis (Hoog) Stapf. and Iris urmiensis Hoog. [11] [33]

It was named after Lake Urumiah in Persia. [2] [3] [11] Although, plants are normally found on the mountains of Turkey, Iran, [9] [12] [14] or Iraq. [14] It is thought that the northern populations of the I. barnumiae are mostly the urmiensis form. [5]

A specimen was collected by James C. Archibald in Iran on 23 May 1966 at 2,070 m (6,790 ft) above sea level. It is now stored in the Herbarium of the Royal Botanic Garden Edinburgh. [34]

It was later re-classified as a form of I. barnumiae by Mathew and Wendelbo in Flora Iranica (Rechinger, K. H., edition of) Vol.112 on page35 in 1975. [9] [35]

It has a similar plant form to Iris iberica, with similar rhizomes and a plant height, [2] of between 15 and 40 cm (6 and 16 in) tall. [12] But it has yellow flowers, [3] [9] [11] that are fragranced. It also has falls that are much smaller than the standards and have an orange beard but no signal patch (on the falls), the standards are 2in high and nearly 1.5in in diameter. [2] Sometimes the beard is thought to be more straggly than I. barnumiae. [3] The pollen of the flowers are 92 microns wide (between 80 and 103). [18]

It is often misnamed as 'Iris urmiensis'. [15] [36] Some authors consider it a separate species. [14]

I. barnumiae f. protonyma (Stapf) B.Mathew & Wendelbo was published and described in 'Flora Iranica' Vol.112 on page 34 in 1975, as I. polakii f. protonyma. [37] I. polakii f. protonyma was later classed as a synonym of I. barnumiae f. protonyma. [38]

It has brownish-purple flowers with short, glaucous green leaves. [7]

Distribution and habitat

It is native to temperate Asia. [22] [23]

Range

It (and the various forms) are found between Armenia, [22] [39] [40] Azerbaijan, [11] [14] [41] Iran, [27] [42] [43] Iraq, [9] [23] [42] and Turkey. [18] [19] [42]

Within Iran, it and other geophytes, (such as Allium capitellatum , Gagea alexeenokoana and Gagea glacialis ) make up 6% of the alpine flora. [26]

Habitat

It grows on the dry and stony hills, [7] [10] or sub-alpine slopes, [27] or steppes. [14]

They can be found at an altitude of up to 2,500 m (8,200 ft) above sea level. [7]

Conservation

Due to the attractive flowers, they are vulnerable from picking by locals and walkers. [4]

The iris is listed as 'rare' in Iraq, [44] within the Zagros Mountains range, along with another endemic species Tragopogon rechingeri . [45]

Cultivation

It is hardy to European H4, [9] (meaning that it is hardy to −5 to −10 °C (or 23 to 14 °F). [46] |Although, it needs habitats that have dry summers, [4] [10] it is considered one of the least demanding of the Oncocyclus section. [6]

For the UK, the iris is better grown within an alpine house, [7] within a raised bed, [47] in a sunny position. [13] It should be filled with 1/3 old mortar rubble, [48] and loam, [7] to provide a well drained, and fertile soil, [7] [13] that allows the roots to not sit in water, that would rot them. [4]

It is suggested that the best time to be planted is in October. [11]

The iris is commercial available in specialist seed exchanges or a few iris nurseries. [10]

Propagation

Irises can generally be propagated by division, [49] or by seed growing. [47] Every three years, the clumps of irises are normally divided, as the plants are highly likely to get bacterial rot if they suffer any moisture or humidity. They are best re-planted in late September when temperatures are low and humidity is also low. This is also when the plants generate root and shoot growth. [47] Irises generally require a period of cold, then a period of warmth and heat, also they need some moisture. Some seeds need stratification, (the cold treatment), which can be carried out indoors or outdoors. Seedlings are generally potted on (or transplanted) when they have 3 leaves. [50]

Hybrids and cultivars

Known I. barnumae cultivars include 'Barnumae Mariae', 'Demavendica', 'Jewel At Midnight', 'Polakii', 'Protonyma', 'Urmiensis' and 'Zenobiae'. [3]

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. Also, handling the plant may cause skin irritation or an allergic reaction. [51]

Related Research Articles

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<i>Iris subbiflora</i> Species of plant

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<i>Iris acutiloba <span style="font-style:normal;">subsp.</span> lineolata</i> Subspecies of flowering plant

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<i>Iris acutiloba</i> Species of plant

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<i>Iris atrofusca</i> Species of plant

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<i>Iris atropurpurea</i> Species of flowering plant

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<i>Iris auranitica</i> Species of plant

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<i>Iris bismarckiana</i> Species of plant

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<i>Iris bostrensis</i> Species of plant

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Iris camillae is a species in the genus Iris, it is also in the subgenus Iris and in the section Oncocyclus. It is a rhizomatous perennial, from Azerbaijan. It has narrow, falcate (sickle-shaped) leaves, medium-sized stem and large flowers, where the flower colour is very variable, ranging from violet, purple, pale blue, and also yellow, and occasionally bi-colour forms are found. It has a yellow beard. It is rarely cultivated as an ornamental plant in temperate regions, due to its environmental conditions of its natural habitat.

<i>Iris gatesii</i> Species of plant

Iris gatesii is a species in the genus Iris, it is also in the subgenus Iris and in the section Oncocyclus. It is a rhizomatous perennial, from the mountains of Turkey and Iraq. It has long, narrow, grey-green or glaucous leaves. The strong, sturdy stem supports a single large flower in spring, between April and June. The large flowers are very variable in colouring, ranging from a pale greenish, grey, white, or creamy-yellow background colour, which is then covered with many purplish-brown, purple, or nearly black, spots, dots, short broken lines, or veining. They have a brownish purple or purple beard, over a dark signal patch. It can be cultivated as an ornamental plant in temperate regions, if it does not get too wet during summer.

Iris grossheimii is a plant species in the genus Iris, subgenus Iris and section Oncocyclus. It is a rhizomatous perennial, from the Caucasus Mountains of Georgia, Armenia and Azerbaijan. It has sickle shaped leaves, which are as long as the short stem, which carries one flower in spring. It is beige, pink or brown covered in dark lines that are, purple-brown or brown. It has a large blackish brown signal patch and brown or black beard. It is rarely cultivated as an ornamental plant in temperate regions, as it needs very dry conditions during the summer.

<i>Iris hermona</i> Species of flowering plant

Iris hermona, the Golan iris, is a plant species in the genus Iris, it is also in the subgenus of Iris, and in the section Oncocyclus. It is a rhizomatous perennial, from the pastures and meadows of the Golan Heights in Israel and Syria. It has linear, upright leaves, tall slender stem holding a bi-coloured flower, having a pale lilac, cream-yellow, light tan, or white background, which is then covered in purple brown, or purple, or purple-pink veining, spots or speckling. It has a round purple-brown or almost black signal patch, and a sparse purple brown or almost black beard. It is rarely cultivated as an ornamental plant in temperate regions, as it needs very dry conditions during the summer.

<i>Iris iberica</i> Species of plant

Iris iberica is a plant species in the genus Iris, it is also in the subgenus Iris and in the section Oncocyclus. It is a rhizomatous perennial, from the Caucasus Mountains of Armenia, eastern Georgia, and western Azerbaijan. It has narrow, glaucous, gray-green and sickle shaped leaves, short stem holding a single flower in late spring. Which has a pale background covered with heavy veining in pale mauve, violet, dark purple, maroon or purple-brown. It has a black or dark purple signal patch and a brown or purple-brown beard. Although, it has many hybrid forms dues to its variability and has 2 known subspecies of Iris iberica subsp. elegantissima and Iris iberica subsp. lycotis. It is cultivated as an ornamental plant in temperate regions, as it is hardier than other Oncocyclus species.

<i>Iris iberica <span style="font-style:normal;">subsp.</span> elegantissima</i> Subspecies of flowering plant

Iris iberica subsp. elegantissima is a subspecies in the genus Iris, subgenus Iris and section Oncocyclus. It is a subspecies of Iris iberica and is a rhizomatous perennial, from Armenia, Turkey and Iran. It has large, thin and falcate (sickle-shaped) leaves, slender stem with a single flower between April and May. It has a white, cream or pale yellow ground, which is covered in dark veining or speckling in violet, mauve, purple or brown shades. The larger standards are paler, normally white and less veined. The falls, have darker veining and a dark signal patch and brown or purple beard. It is commonly known as Iris elegantissima, especially in Europe and Russia. It is cultivated as an ornamental plant in temperate regions, but normally needs some protection during the winter period.

<i>Iris mariae</i> Species of plant

Iris mariae is a species in the genus Iris, it is also in the subgenus Iris and in the section Oncocyclus. It is a rhizomatous perennial, from the deserts of Israel, Egypt and Palestine. It is fairly tall, with long and slender glaucous leaves, and in late spring, lilac-purple to pinkish or violet flowers with deeper veining and blackish-violet signal and dark purple beard.

<i>Iris paradoxa</i> Species of plant

Iris paradoxa is a species of flowering plant native to western Asia. It has large upright petals and smaller lower petals, which is unique amongst most iris forms. They come in various shades from white, lavender, mauve, medium purple, violet, dark purple to black. It has a black or purplish black beard on the lower petals. It comes from the region of Transcaucasia, and is found in the countries of Iran, Turkey, Armenia and in Azerbaijan.

References

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  34. ↑ "Filed as Iris urmiensis Hoog [family IRIDACEAE]". plants.jstor.org. 23 May 1966. Retrieved 11 June 2016.{{cite journal}}: Cite journal requires |journal= (help)
  35. ↑ Black, John (30 January 2016). "(SPEC) Iris demavendica Bornm". wiki.irises.org (American Iris Society). Retrieved 7 June 2016.
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