Iris barnumiae subsp. demavendica is a species in the genus Iris, it is also in the subgenus of Iris and in the Oncocyclus section. It is a rhizomatous perennial, from Elburz Mountains in Iran.

Distribution and habitat

It is native to Asia as a Irano-Turanian species.^[2]

Range

It is found in Iran,^[3] (or Persia,^[4][5]) within the Elburz Mountains,^[6][7][8] (or Alborz Mountians,^[9]). Between the Khandavan Pass,^[10] to Firouzkuh,^[11] including the Jahan Nama Protected Area.^[12]

Habitat

It grows on the rocky mountain slopes (of the Elburz Mountains).^[11][13]

They can be found at an altitude of 2,300–4,200 m (7,500–13,800 ft) above sea level.^[13]

Propagation

Irises can generally be propagated by division,^[14] or by seed growing.^[15] 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.^[15] 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.^[16]

Toxicity

Like many other irises, most parts of the plant are poisonous (rhizome and leaves), if mistakenly ingested can cause stomach pains and vomiting. Also handling the plant may cause a skin irritation or an allergic reaction.^[17]

Culture

On 2 March 1991, Iran published a set of stamps called the 'Flora of Iran' collection, which included I. demawendica.^[18]