[4][5][6] It has branching, thick, fibrous and strong secondary stolons roots,[5][6][7] which are yellow and white.

[4][6][7] It has green, ensiform (sword shaped) or lanceolate basal (growing from the base) leaves.

[7][8][9] The stem has 3 green, lanceolate, (scarious) membranous, spathes or bracts (leaves of the flower bud).

[4][5] After the iris has flowered, between June and August,[5][6] it produces a fusiform (spindle shaped) seed capsule.

[13] In 2000, an isoflavonoids (chemical compound) study was carried out on 22 species of iris.

[14] In 2007, a study was carried out on the anatomical structure of the leaves of Iris mandshurica.

[17] In 2013, a molecular phylogenetic (genetic evolution) study was carried out on 16 species of Iris found in Korea.

[18] As most irises are diploid, having two sets of chromosomes, this can be used to identify hybrids and classification of groupings.

[10] It is written as 长白鸢尾 in Chinese script,[6] and known as chang bai yuan wei in Pinyin in China.

[21][22] The Latin specific epithet mandshurica refers to Manchuria, coming from the Chinese region.

[19][21] It is found in the Russian Federation,[5][6][11] in the state of Primorye,[4][19][20] beside the Ussuri River.

[4] It is also found in China[21][26] (or Manchuria[9][11][20]) in the provinces of Heilongjiang, Jilin and Liaoning.

[6][7] It is considered as an 'endangered' species in Russia,[7][20] and listed in the Red Data Book of the Russian Federation.

[22] It is protected in a reserve of 'Senkina Shapka Hill, in Oktyabrsky District,[22] beside the Tsukanovki river.

[10] It was tested (for hardiness) in the botanical gardens of Alma Ata in Moscow (TAA) and Tomsk.

[22] Propagation methods: By dividing rhizomes, tubers, corms or bulbs (including offsets) Seed collecting: Allow pods to dry on plant; break open to collect seeds[10] In 2006, a study was carried out on the pollen viability of Iris mandshurica.

[27] Like many other irises, most parts of the plant are poisonous (rhizome and leaves), and if mistakenly ingested can cause stomach pains and vomiting.