Iris orientalis


Gard. Dict. ed. 8, Iris no. 9. 1768.

Treatment appears in FNA Volume 26. Treatment on page 394. Mentioned on page 374.

Rhizomes sparingly short-branched, forming dense clumps, 1–1.5 cm diam., hard, with old leaf bases at nodes; roots fleshy. Stems slightly flattened, with 1–2 short branches, solid, 4–12 dm. Leaves: basal erect, blade with slight spiral twist and central ridge, 3.5–8 dm × 1–2 cm, stiff, harsh, fibrous, glaucous; cauline 2–3, 1–2 subtending floral clusters, blade reduced. Inflorescence units clustered, 2–4-flowered; spathes white, 3–5 cm, subequal, papery. Flowers: perianth white; floral tube funnelform, 1–2.5 cm; sepals spreading and arching downward, with large yellow basal area, broadly orbicular, 8–10 × 3–6 cm, apex rounded, deeply emarginate; petals white, spatulate, 4–6 × 1–1.5 cm, base gradually attenuate, apex emarginate; ovary triangular in cross section with 2 ribs at each angle, 2–2.5 cm; style white, with parallel sides, 4–5 cm, crests erect, triangular, 1–2 cm; stigmas 2-lobed; pedicel 2.5–7.5 cm. Capsules ovoid to oblong-elliptic, triangular in cross section, each angle 2-ribbed, 4–5 × 2–2.5 cm. Seeds in 2 rows per locule, white, flattened or wedge-shaped, 4–5 mm, papery, wrinkled. 2n = 40.

Phenology: Flowering May–Jul.
Habitat: Persisting after cultivation or discarded along roadsides


Introduced; Calif., Conn., Mo., expected elsewhere, Greece, Turkey.


Selected References


Lower Taxa

... more about "Iris orientalis"
Norlan C. Henderson +
Miller +
Iris subsect. Spuriae +
Calif. +, Conn. +, Mo. +, expected elsewhere +, Greece +  and Turkey. +
Persisting after cultivation or discarded along roadsides +
Flowering May–Jul. +
Gard. Dict. ed. +
Undefined subg. Limniris +
Iris orientalis +
Iris (sect. Limniris) ser. Spuriae +
species +