The World Flora Online

Rhizomes pink, freely branching, producing extensive clumps, 2–3 cm diam., with fibrous remains of old leaves; roots fleshy. Stems usually 1-branched, solid, 7–15 dm. Leaves: basal deciduous, at first erect, then recurved, blade dark green, with prominent median thickening, 4–10 dm × 2–3 cm, slightly glaucous basally; cauline equaling inflorescence unit. Inflorescence units 4–12-flowered; spathes green with brown margins, outer spathe strongly keeled, inner without keel, 6–9 cm, subequal, margins not scarious. Flowers: perianth bright yellow; floral tube 0.6–0.8 cm, with no constriction into ovary; sepals bright yellow or cream colored, lanceolate to ovate or suborbiculate, 5–7.5 × 3–4 cm, base abruptly attenuate, claw ca. 1/2 length of limb, signal a darker yellow basal patch limited by short, brown lines; petals without veining, lanceolate to spatulate, 2–3 cm; ovary triangular in cross section with concave sides and narrow groove at each angle, 1.5 cm; style keeled, 3–4 cm, crests spreading, 1–1.2 cm, laciniate at apex; stigmas rounded with prominent tongue; pedicel 2.5–7 cm. Capsules prismatic to oblong-ovoid, obscurely 3-angled with obvious groove at each angle, 3.5–6 cm, beak 5 mm. Seeds D-shaped, flattened, 6–7 mm, corky, lustrous. 2n = 34.

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Lvs stiff and erect, broadly ensiform from densely crowded rhizomes; stem 0.5–1 m, shorter than or equaling the lvs; fls 7–9 cm wide, bright yellow or cream-color; sep spreading, the crest area outlined by an irregular series of brown markings; pet erect, ligulate, constricted at the middle, 1–2.5 cm, unmarked; capsule 6-angled, cylindric-prismatic to ellipsoid, 5–8.5 cm, the valves widely spreading at maturity; 2n=24–34. Swamps and shallow water along streams and ponds; native of Europe, and widely established in our range. Apr.–June.

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Stem: subterranean . Leaf: phylotaxy ; form . Inflorescence: number flower multiflorous. Flower: tepal(s) ; colour ; fusion tepal(s) ; style . Seed: aril ; colour .

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Tallo: subterraneo(s) . Hoja: filotaxia ; forma . Inflorescencia: número flor(es) multiflora(s). Flor: tépala(s) ; color ; fusión tépala(s) ; estilo(s) . Semilla: arilo(s) ; color .

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Caule: subterrâneo(s) . Folha: filotaxia ; forma . Inflorescência: número flor(es) multiflora(s). Flor: tépala(s) ; cor ; fusão tépala(s) ; estilete(s) . Semente: arilo(s) ; cor .

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Stängel 50–100 cm hoch, etwas zusammengedrückt. Blätter lineal, 1–3 cm breit und bis 90 cm lang, mit starker Mittelrippe, allmählich zugespitzt, 2zeilig angeordnet, die meisten grundständig. Blütenstand 4–12blütig, Blüten gelb. Die 3 äussere

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6. Ufer, Röhricht, Gräben, kollin(-montan). J, M, AN, südliches TI, VS (Rhonetal).

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