The World Flora Online

Plants perennial, rooted in mud. Vegetative stems contracted, rhizomatous. Flowering stems erect, to 120 cm. Sessile leaves: blade linear. Petiolate leaves emersed; stipule 7–29 cm; petiole distinctly constricted just below blade, to 60 cm; blade lanceolate to cordate, 6–22 × 0.7–12 cm. Spikes with up to several hundred flowers, 2–15 cm; spathes 5–17 cm. Perianth mauve, tube 3–9 mm, limb lobes oblanceolate, 5–8 mm, distal central lobe with 2-lobed yellow spot; proximal stamens 7–13 mm, distal 1.5–6.3 mm; style 3-lobed. Utricles with dentate ridges, 4–6 × 2–3 mm.

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1. Pontederia cordata L., Sp. Pl. 288 (1753). Lectotipo (designado por Reveal et al., 1987): Estados Unidos, Kalm s.n. (microficha MEXU! ex LINN-407.4). N.v.: Water lily, B.

Por A. Novelo R. y A. Lot H.

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Plant erect, emersed, up to 15 dm. tall, rooted in the mud. Petiole elongate, stipulate; leaf blade lanceolate, oblong-lanceolate, cordate, hastate, or sagittate, 3-20 cm. long, 2-15 cm. broad. Spathe loosely ensheathing the lower rachis, with inflorescence usually well exserted; inflorescence longer than broad, 3-13 cm. long; rachis and base of flowers lightly pubescent, sometimes glabrate in age, if glandular-pubescent the glands globular and less than 0.1 mm. in diameter. Flowers white to blue, 8-15 mm. long; tube 5-9 mm. long; stamens unequally adnate to the tube, the 3 lower not exserted beyond the tube; anthers orbicular or oblongoid, about 0.7 mm. long; filaments up to 9 mm. long; style elongate, about 8 mm. long, with a subcapitate, inconspicuously lobed stigma. Fruit oblong- pyriform or ovoid-pyriform, 4-7 mm. long, with longitudinal ridge-like crests.

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Erect or nearly so, to 10 dm; basal lvs and lower stem-lf similar, long- petioled, the blade firm, broadly cordate to lanceolate, to 18 cm; spathe loosely sheathing, 3–6 cm; infl crowded, 5–15 cm; perianth funnelform, villous or shortly glandular-pubescent in bud, later often glabrate, violet-blue, rarely varying to white, the tube 5–7 mm, the lobes 7–10 mm; filaments pubescent; fr 5–10 mm, longer to sometimes shorter than wide; 2n=16. Marshes and shallow water; N.S. to Ont. and Minn., s. to S. Amer. (P. lanceolata)

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Stem: branch rhizomatose; internode short. Leaf: limb cordiform/elliptic; midrib foliar non evident. Inflorescence: bracteole(s) erect; rachis pubescent. Flower: colour lilac/white; lobe(s) 3 upper and 3 lower; tube and lobe(s) pilose; trichome short; filament pubescent; style puberulent. Fruit: achene winged.

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Caule: caule(s) rizomatoso(s); entrenó(s) curto(s). Folha: limbo cordiforme(s)/elíptico(s); nervura-central foliar(es) não evidente(s). Inflorescência: bractéola(s) ereta(s); raque pubescente(s). Flor: cor lilás/branca; lobo(s) 3 superior(es) e 3 inferior(es); tubo e lobo(s) piloso(s); tricoma(s) curto(s); filete(s) pubescente(s); estilete(s) puberulento(s). Fruto: aquênio(s) alado(s).

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Tallo: caule(s) rizomatoso(s); entrenudo(s) corto(s). Hoja: limbo cordiforme(s)/elíptico(s); nervadura-central foliar(es) no evidente(s). Inflorescencia: bracteola(s) erecta(s); raquis pubescente(s). Flor: color lila/blanca; lobo(s) 3 superior(es) y 3 inferior(es); tubo y lobo(s) piloso(s); tricoma(s) corto(s); filamento(s) pubescente(s); estilo(s) puberulento(s). Fruto: aquenio(s) alado(s).

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Bis 1 m hoch. Stängel mit einem einzigen, gestielten Blatt. Grundständige Blätter bis 25 cm lang, schmal-herzförmig, vorn gerundet. Blütenstand eine vielblütige Ähre. Blüten blau, ca. 12 mm lang, flaumig behaart, deutlich 2lippig, Ober- und

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Rooted herbaceous hygrophyte 1-2 m tall, with a horizontal rhizome, forming colonies. Stems long, sympodial, 1-leaved, leaves erect, exserted, with short petiole forming dilated sheath at base; lamina cordate (in typical variety) to ovate or 'lanceolate' (in var. ovalis), c. 230 x 70 mm, firm, smooth. Flowering stem emerging from sheathing base of leaf and about as long; peduncle short, pubescent, enveloped by large sheathing bract. Spike cylindrical, up to c. 100 mm long and 20 mm broad, flowers dense, clustered, blue, rarely white. Perianth c. 15 mm long, shortly pubescent on outside, funnel-shaped, upper lip broader than side-lobes, with yellow blotch in centre. Stamens unequal, upper shorter, included, lower exserted, filaments filiform, pubescent. Ovary: abortive carpels surviving as ridges on walls of ovary; style long or short, slender; stigma apical. Utricle enveloped by accrescent base of perianth.

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Erva

7–9. Auf schlammigem Grund in Schilfbeständen, kollin. GE, BE, BA, ZH u.a.

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Terrícola

Aquática

A well-known decorative, cultivated aquatic, common in parks and gardens, recently found growing wild along riverbanks.

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South America, naturalized in North America. In Kwazulu; also said to occur in the eastern Cape.

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