''Iris croatica'' is a bearded

rhizomatous In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...

species of

iris Iris most often refers to: *Iris (anatomy), part of the eye *Iris (mythology), a Greek goddess * ''Iris'' (plant), a genus of flowering plants * Iris (color), an ambiguous color term Iris or IRIS may also refer to: Arts and media Fictional ent ...

(subgenus ''Iris'') endemic to

Croatia , image_flag = Flag of Croatia.svg , image_coat = Coat of arms of Croatia.svg , anthem = "Lijepa naša domovino"("Our Beautiful Homeland") , image_map = , map_caption = , capit ...

Description

It has branched stems and dark violet flowers. Like other irises, it has 2 pairs of petals, 3 large

sepals A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

(outer petals), known as the 'falls' and 3 inner, smaller petals (or

tepals A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very ...

), known as the 'standards'. The standards are slightly paler than the falls, they have white veining on the throat. It has a beard which is whitish yellow, and the spathes are slightly tinged with red-violet, like those of ''

Iris aphylla ''Iris aphylla'' (also known as leafless iris, table iris or stool iris) is a species in the genus ''Iris'', it is also in the subgenus ''Iris'', and in the section ''Iris''. It is a rhizomatous perennial, from Asia to Europe. It is found in Azer ...

''.

Biochemistry

As most irises are

diploid Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively ...

, having two sets of

chromosomes A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ...

, this can be used to identify hybrids and classification of groupings. It was counted as 4n=48 (making it a

tetraploid Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains ...

Taxonomy

It was described in 1962 by botanists Ivo and Marija Horvat, in 'Acta Bot. Croatica', Issue 20–21 on page 8. Then in 1981,

Brian Mathew Brian Frederick Mathew MBE, VMH is a British botanist, born in the village of Limpsfield, Surrey, England. His particular area of expertise is bulbous plants, particularly ornamental bulbous plants, although he has contributed to other fiel ...

in his book 'The iris', reclassified it a synonym of ''

Iris germanica Iris most often refers to: *Iris (anatomy), part of the eye *Iris (mythology), a Greek goddess * ''Iris'' (plant), a genus of flowering plants *Iris (color), an ambiguous color term Iris or IRIS may also refer to: Arts and media Fictional enti ...

''.

Distribution and habitat

''Iris croatica'' is

native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (disambiguation) In arts and entert ...

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...

areas of Europe.

Range

It is found in Croatia and Slovenia. It grows mostly in the woods of

downy oak ''Quercus pubescens'', the downy oak or pubescent oak, is a species of white oak (genus ''Quercus'' sect. ''Quercus'') native to southern Europe and southwest Asia, from northern Spain (Pyrenees) east to the Crimea and the Caucasus. It is also fou ...

(''Quercus pubescens'') and black hophornbeam (''Ostrya carpinifolia'') on

dolomite Dolomite may refer to: *Dolomite (mineral), a carbonate mineral *Dolomite (rock), also known as dolostone, a sedimentary carbonate rock *Dolomite, Alabama, United States, an unincorporated community *Dolomite, California, United States, an unincor ...

and

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

soils. It is known from hilly parts of continental

Croatia , image_flag = Flag of Croatia.svg , image_coat = Coat of arms of Croatia.svg , anthem = "Lijepa naša domovino"("Our Beautiful Homeland") , image_map = , map_caption = , capit ...

including the hills of Samoborsko gorje (near

Samobor Samobor () is a city in Zagreb County, Croatia. It is part of the Zagreb metropolitan area. Administratively it is a part of Zagreb County. Geography Samobor is located west of Zagreb, between the eastern slopes of the Samobor hills ( hr, Samo ...

), the hill Cesargradska gora (near

Klanjec Klanjec () is a small town in northwestern Croatia, in the region of Hrvatsko Zagorje on the border with Slovenia. History In the late 19th and early 20th century, Klanjec was a district capital in the Varaždin County of the Kingdom of Croatia-S ...

), near

Josipdol Josipdol is a village and municipality in Karlovac County, Croatia. It is part of Lika region. Geography Josipdol is situated in the Ogulin-Plaški valley which together with Lika and Gorski Kotar forms Mountainous Croatia. The town is locat ...

, on the hill of Strahinjčica (near

Radoboj Radoboj is a village and municipality in Krapina-Zagorje County in Croatia. In the 2011 census, the total population was 3,387, in the following settlements: * Bregi Radobojski, population 445 * Gorjani Sutinski, population 145 * Gornja Šemn ...

), and at Zagrebačko gorje and Žumberačko gorje. It is on the Croatian list of strictly protected plants, among nine ''Iridaceae'' species. It is unofficially known as the

national flower In a number of countries, plants have been chosen as symbols to represent specific geographic areas. Some countries have a country-wide floral emblem; others in addition have symbols representing subdivisions. Different processes have been used to ...

of Croatia.James Minahan

References

External links

{{Taxonbar, from=Q6070345 croatica Endemic flora of Croatia Garden plants of Europe Croatian culture Plants described in 1962