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Iris bloudowii

Iris bloudowii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Iridaceae
Subfamily: Iridoideae
Tribe: Irideae
Genus: Iris
Subgenus: Iris
Section: Psammiris
Species: Iris bloudowii
Binomial name
Iris bloudowii
Ledebour
Synonyms
  • Iris flavissima var. bloudowii (Ledeb.) Baker
  • Iris flavissima var. umbrosa Bunge

Iris bloudowii is a species in the genus Iris, it is also in the subgenus of Iris and in the Psammiris section. It is a rhizomatous perennial, from Russia, Siberia, Kazakhstan, Mongolia and China, with sickle-shaped leaves, slender stem and 2 bright or pale yellow flowers. It is cultivated as an ornamental plant in temperate regions.

It is similar in form to Iris humilis (another Psammiris species).

It has a thick, short, irregularly shaped, fibrous rhizome. They are 0.5–1.5 cm (0–1 in) in diameter. Under the rhizome, are numerous yellow-white, secondary roots. On top of the rhizome, are the brown, fibrous remains of old leaves. The rhizome has many branches, creating a slowly, creeping plant.

It has 2-4, linear, or lanceolate, or sword-shaped basal leaves, They are slightly curved or sickle-shaped. They appear in spring, as broad, brown shoots, before turning greyish green, or light green, they can grow up to between 8–12 cm (3–5 in) long and 4–8 mm wide, at blooming time. Later, they extend up to between 15–25 cm (6–10 in) long and 8–13 mm wide. They have 5-6 longitudinal veins, but no central mid-vein. The leaves are deciduous, and die away after flowering.

It has a slender, erect stem, that can reach up to between 8–10 cm (3–4 in) long. After flowering, the stem extends up to 35 cm (14 in) long. It is not branched and carries the flowers above the foliage.

The stem has 2 or 3, keeled, oblong-lanceolate, reddish purple, membranous, spathes or bracts (leaves of the flower bud). They are 4 cm (2 in) long and 1.6–2 cm wide.

The stems hold 2 terminal (top of stem) flowers, blooming in late spring, between April and May, or June (in Russia). The flowers are held on pedicels (stalks) that are 0.5–2 cm long.

The flowers are 5–6 cm (2–2 in) in diameter, come in shades of yellow, from bright yellow, to clear yellow, to dark yellow.


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Wikipedia

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