Latin name: Iris pseudacorus

Alias: yellow iris, aquatic iris

Yellow iris is the pride of aquatic flowers, yellow color, beautiful flowers, such as golden butterflies dancing in the bushes, the ornamental value is very high. Widely adapted to a wide range, can be cultivated in the open ground by the pool, can also be cultivated in the water quite water, the effect is very good. The Latin species name pseudacorus is a composite of pseudo and acorus, of which acorus is the genus name of Acorus, and pseudo has the meaning of "false", "like ...". "meaning, composite is" like calamus "," false calamus ", refers to the yellow iris plant form and calamus plants are very similar.

Perennial herb, the base of the plant has a small amount of old leaf residual fiber, rhizome stout, up to 2. 5 cm in diameter, diagonal extension, nodes obvious, yellow-brown; fibrous roots yellowish-white, wrinkled transverse lines. Basal leaves gray-green, broadly sword-shaped, 40-60 cm long, 1. 5-3 cm wide, apically acuminate, basally sheathing, pale, with a more pronounced midvein. Flowering stem stout, 60-70 cm tall, 4-6 mm in diam. with conspicuous longitudinal ribs, branched above, stem leaves shorter and narrower than basal leaves; bracts 3-4, green, membranous, lanceolate, 6. 5-8. 5 cm long, 1. 5-2 cm wide, apically acuminate. 2 cm, apically acuminate; flowers yellow, 10-11 cm in diameter; pedicel 5-5. 5 cm; perianth tube 1. 5 cm, outer perianth lobes ovate-orbicular or obovate, ca. 7 cm, 4. 5-5 cm wide, claw narrowly cuneate, centrally sunken furrowed, with black-brown stripes, inner perianth lobes smaller, oblanceolate, erect, 2. 7 cm long, ca. 5 mm wide; stamens ca. 3 cm long, filaments yellow-white, anthers black-purple; style branches yellowish, ca. 4. 5 cm long, ca. 1. 2 cm wide, apical lobes semiorbicular, margins sparsely dentate; ovary green, trigonous-columnar, ca. 2. 5 cm long, ca. 5 mm in diam. Fl. May, fr. June-Aug.