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    Aquarius subulatus (Mart. ex Schult.f.) Christenh. & Byng

    Aquarius subulatus (Mart. ex Schult.f.) Christenh. & Byng


    Basionym : Echinodorus subalatus (Mart. ex Schult.f.) Griseb.[1]


       Echinodorus andrieuxii (Hook. & Arn.) Small

       Echinodorus andrieuxii var. longistylus (Buchenau) Rataj

       Echinodorus ellipticus var. ovatus Micheli

       Echinodorus intermedius (Mart. ex Schult.f.) Griseb.

       Echinodorus martii Micheli

       Echinodorus subalatus subsp. andrieuxii (Hook. & Arn.) R.R.Haynes & Holm-Niels.

       Echinodorus subalatus var. minor F.J.Mey.

       Alisma andrieuxii Hook. & Arn.

       Alisma subalatum var. majus Schult.f.

       Alisma subalatum var. medium Schult.f.

       Alisma subalatum var. minus Schult.f.

    Sagittaria palifolia var. subalata (Mart. ex Schult.f.) Kuntze


    From Mexico to Bolivia and southern Brazil.


    Temporary ponds and damp depressions on flooded savannahs, floodplains. From sea level to 1500 m.

    Morphology General habit

    Perennial, from rhizomes, petioles and stems glabrous to rough, up to 120 cm, rhizomes up to 8 cm long, 4 cm diam. Leaves mostly emersed, leaf blade elliptic to oval, 5 - 9-veined, 15 - 40 cm long, 4 - 17 cm wide, glaucous markings absent or present as lines, apex acute, base finely attenuated, petioles canalized, furrowed, up to 50 cm long , 0.5 - 2 cm diam, base with sheath up to 15 cm long, submerged leaves linear-elliptic, entire, 3 - 5 veins, 7 - 15 cm long, 0.5 - 1 cm wide, apex acute, base attenuated, glaucous markings absent, petioles canalized, furrowed, up to 5 cm long, c. 0.3 mm diam., base with sheath up to 1.5 cm long

    Morphology Reproductive morphology Fruits

    Fruit oblanceoloid, 3 - 6-ribbed, glandular, 1.5 - 2.3 mm long, 1 mm wide, glands 1 (- 3), circular, separated by ribs, beak end, erect, 0.5 - 1.5 mm.

    Morphology Reproductive morphology Inflorescences

    Inflorescence racemose or rarely paniculate, of 5 - 15 whorls, each 3 - 18-flowered, erect, shorter than or slightly exceeding leaves, occasionally multiplying, up to 40 cm long, 2 - 8 cm wide, rachis triangular in cross-section, alate , petioles furrowed, up to 50 cm long, bracts fused, lanceolate, much longer than petioles subtended, 1.5 - 6 cm long, 2 - 9 mm wide, 11 - 19-veined, apex long-pointed, pedicels spreading in flower and fruit, 0.2 - 1.5 cm long, approx. 0.5 mm diam. flowers 1.5 - 3 cm in diameter, sepals and petals spreading, sepals 9 - 15-veined, ca. 5 mm long, ca. 4 mm wide, veins without papillae, petals not clawed, not overlapping, ca. 9 mm long, ca. 6 mm wide, stamens 12, anthers many-sided, ca. 1.2 mm long, filaments ca. 1.8 mm long, carpels numerous


    Flowering and fruiting all year round. [1]


    1. 1.0 1.1 POWO (2021). "Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Im Internet veröffentlicht; Abgerufen am 22. August 2021."
    2. 2.0 2.1 2.2 Kostiantyn Loboda, Black Water
    3. Echinodorus subalatus (Mart. ex Schult.f.) Griseb. Observed in Brazil by Breno Figueiredo (licensed under
    4. Digital Image © Board of Trustees, RBG Kew