Iris brevicaulis


Fl. Ludov., 20. 1817.

Common names: Short-stem iris
Synonyms: Iris alabamensis Small Iris foliosa Mackenzie & Bush Iris mississippiensis Alexander
Treatment appears in FNA Volume 26. Treatment on page 393. Mentioned on page 371, 374, 391, 392.

Rhizomes freely branching, producing extensive clumps, 1–2.5 cm diam. Stems declining or semi- erect, sharply zigzag, with short branch at each of 2–3 bends, leaf at every bend, flower bud at every bend, solid, 2.5–3 dm. Leaves: basal erect, spreading, or prostrate, blade deep green, ensiform, 3.5–7 dm × 1.5–3.5 cm, somewhat glaucous; cauline at each of 2–3 nodes, subtending and exceeding short branch and flower, blade 2–6 dm. Inflorescences with terminal unit 2-flowered, each short branch unit 1-flowered; spathes foliaceous, lanceolate, 3–5 cm, subequal, apex acute; outer green, exceeding inner; inner partly scarious. Flowers: perianth rich blue or blue-violet; floral tube funnelform, 1–2 cm; sepals ovate, 7.5–9 × 2.5–3 cm, base abruptly attenuate, claw light greenish yellow with darker veins, with prominent yellow midrib and large, yellow-white signal at union of limb and claw; petals erect or spreading-erect, lighter blue than sepals, oblanceolate, 5–6.5 × 1.5–2 cm; ovary prominently 6-angled, 1–1.3 cm; style greenish, 3.5–4 cm, crests reflexed, semiovoid to subquadrate, 1.2–1.5 cm, margins irregularly toothed or entire; stigmas 2-lobed, lobes rounded-deltoid; pedicel 1–1.3 cm. Capsules hexagonal to almost circular in cross section with 6 equally placed ribs, with short beak at apex, 3–5 × 2–2.5 cm. Seeds in 2 rows per locule, light brown, irregularly circular, flattened, 3–5 mm, very corky. 2n = 42, 44.

Phenology: Flowering Apr–Jun.
Habitat: Open, rather moist woodlands


V26 804-distribution-map.jpg

Ont., Ala., Ark., Fla., Ill., Ind., Kans., Ky., La., Miss., Mo., Okla., Tenn.


Iris brevicaulis hybridizes with I. fulva to produce I. ×fulvala Dykes, and with I. giganticaerulea to produce I. ×flexicaulis Small.

Selected References


Lower Taxa

... more about "Iris brevicaulis"
Norlan C. Henderson +
Rafinesque +
Iris subsect. Hexagonae +
Short-stem iris +
Ont. +, Ala. +, Ark. +, Fla. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Miss. +, Mo. +, Okla. +  and Tenn. +
Open, rather moist woodlands +
Flowering Apr–Jun. +
Fl. Ludov., +
Illustrated +  and Endemic +
Iris alabamensis +, Iris foliosa +  and Iris mississippiensis +
Iris brevicaulis +
Iris (sect. Limniris) ser. Hexagonae +
species +