Iris orientalis

Miller

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 oblongelliptic, 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

Distribution

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

Discussion

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."decreasing" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Iris orientalis"
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
2cm;2.5cm +
dehiscing +  and latrorse +
Norlan C. Henderson +
Miller +
attenuate +
Iris subsect. Spuriae +
reduced +
1cm;2cm +
1 +  and 2 +
cordlike +
enlarging +
triangular +, ovoid +  and oblongelliptic +
triangular +
1cm +  and 2cm +
monochasial +
Calif. +, Conn. +, Mo. +, expected elsewhere +, Greece +  and Turkey +
distinct or;partly completely connate +
hollow +  and solid +
ridged +  and terete +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
sessile +  and pedicellate +
fragrant +
upward-facing +
hollow +, solid +, branched +  and simple +
flattened +, terete +  and cordlike +
indehiscent +  and loculicidal +
woody;firm;cartilaginous +
Persisting after cultivation or discarded along roadsides +
multicellular +
distinct +
cauline +  and basal +
scale-like +
distinct +
conspicuous +
triangular +  and rounded +
triangular +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
4 cm40 mm <br />0.04 m <br /> (18 cm180 mm <br />0.18 m <br />) +
differentiated +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
reflexed +, spreading +  and erect +
reduced +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
Flowering May–Jul. +
Gard. Dict. ed. +
short-branched +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
tan;dark-brown +
conspicuously roughened +  and extensively corky +
4 +  and 20 +
wrinkled +
wedge--shaped;flattened +
downward +, arching +  and spreading +
orbicular +
expanding +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
persisting +
subequal +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
monochasial +
flattened +
3-lobed +  and filiform +
4 cm40 mm <br />0.04 m <br /> (?) +  and 5 cm50 mm <br />0.05 m <br /> (?) +
Undefined subg. Limniris +
Iris orientalis +
Iris (sect. Limniris) ser. Spuriae +
species +
connate +  and distinct +
scarious +
spathaceous +  and more-flowered +
obscure;prominent +
hardened +  and papery +
unequal +