Aquarius scaber (Rataj) Christenh. & Byng
Basionym : Echinodorus scaber Rataj
Synonyms:
Echinodorus macrophyllus subsp. scaber (Rataj) R.R.Haynes & Holm-Niels.[1]
Echinodorus scaber var. proliferatus Rataj
Occurrence:
Nicaragua, Colombia, Venezuela, Guyana, Brazil
Ecology
Grows in damp depressions on flooded savannahs. At altitudes of 50 - 400 m.
Morphology General habit
Perennial, from rhizomes, petioles and stems rough, up to 300 cm, rhizomes 3 cm diam. Leaves emersed, leaf blade ovate, 5 - 9-veined, 9 - 30 cm long, 5 - 15 cm wide, without translucent markings, apex retuse to round-pointed, base cordate, petioles round, furrowed, rough, longer than the leaf blade, 30 - 100 cm long, 5 - 10 mm diameter, base with sheath up to 7 cm long
Morphology Reproductive morphology Fruits
Fruit transversely lanceolate, 5 - 6-ribbed, keeled, glandular, 2.3 - 3.3 mm long, 1 mm wide, glands 0 - 2, glands round, between the ribs, beak end, erect, 0.6 - 1 mm.
Morphology Reproductive morphology Inflorescences
Inflorescence paniculate, of 5 - 21 whorls, each 3 - 6-flowered, erect, protruding leaves, occasionally multiplying, up to 75 cm long, up to 50 cm wide, rachis round, star-shaped hairy, pedicels round and furrowed, 30 - 150 cm long, 0.8 - 1 cm diam, bracts free, lanceolate, coarse, 1 - 2 cm long, c. 5 mm wide, 11 - 16-veined, apex pointed, pedicels spread out in flower and fruit, 0.5 - 2.5 cm long, 0.7 - 1 mm diam. flowers 1 - 1.5 cm in diameter, sepals erect, 10 - 20-veined, 5 mm long, 4 mm wide, veins without papillae, petals recurved, without claws, not overlapping, c. 4 mm long, c. 3 mm wide, stamens 13 - 18, anthers many, 1 mm long, filament 2 mm long, carpels numerous
Phenology
Flowering and fruiting throughout the year.[1]
