From Kazakhstan Encyclopedia
Template:Italic titleTemplate:Taxobox Iris falcifolia is a species in the genus Iris, it is also in the subgenus of Iris and in the Hexapogon section. It is a rhizomatous perennial, from Uzbekistan, Kazakhstan, Afghanistan, Iran and Pakistan. It is a small plant, with sickle-shaped greyish-green leaves (hence the name), lilac-violet flowers and darker veining, and a white or yellow beard. It is cultivated as an ornamental plant in dry, temperate regions.
It has a thick, short, rhizome. It produces nut-like segments, one per year, that spread to create small dense tufts of plants. On top of the rhizome are the fibrous remains of the previous seasons leaves. Underneath are thick fleshy roots.
The stems have 3-4 spathes (leaves of the flower bud), that are Template:Convert long. They are greenish tinted purplish, partially membranous, with a hyaline (clear and translucent) margin.
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'. The falls are oblong or lanceolate-obovate shaped, and are Template:Convert long and 0.6-0.9 cm wide. They have a yellow, or whitish beard in the middle of the leaf. They have darker veining. The standards are lanceolate, narrow, with a canaliculate (small channel) on the haft (section of the petal closest to the stem).
After the iris has flowered, it produces an oval seed capsule, which is Template:Convert long. The seeds come out of the capsule via lateral slits, they are 5mm long and pear shaped. They have a whitish, ring shaped aril (appendage), on the smaller end.
As most irises are diploid, having two sets of chromosomes, this can be used to identify hybrids and classification of groupings. It has a chromosome count: 2n=18, which was discovered by Zakharyeva in 1985.
It was first published and described by Alexander von Bunge in Beitrag zur Kenntniss der Flora Russlands und der Steppen Central-Asiens (Beitr. Fl. Russl.) Vol.329 on 7 November 1852. It was also published in 'Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans' Vol.7 page505 in 1854. Later published in 1941, 'Flora Uzbek' Vol.1 page 510, in 1971 in 'Consp. Fl. As. Med.' Vol.2 page130 and by Wendelbo in 'Flora Iranica' Vol.112 page37 in 1975.
Later in 1913, William Rickatson Dykes, when he wrote his book the 'Genus Iris', placed the iris in the Regelia section. Then Lawrence in 1953 and Rodionenko in 1987 placed it in the Psammiris section. In 2004, Carol Wilson carried out a study on various irises including Iris falcifolia. She thought that the iris was misplaced and that it had a bulb instead of a rhizome, so should be placed with the Juno (Scorpiris) section. In 2011, a molecular study was carried out and replaced the iris back within the Hexapogon section.
Distribution and habitat
It grows on the clay soils of deserts.
A specimen was sent to Paris Botanical Garden.
Like many other irises, most parts of the plant are poisonous (rhizome and leaves), if mistakenly ingested can cause diarrhoea, stomach pains and vomiting. The rhizome can also be toxic to domestic animals.
- Czerepanov, S. K. 1995. Vascular plants of Russia and adjacent states (the former USSR).
- Mathew, B. 1981. The Iris. 65–66.
- Nasir, E. & S. I. Ali, eds. 1970–. Flora of (West) Pakistan.
- Rechinger, K. H., ed. 1963–. Flora iranica.