Nymphoides montana Aston
- Aston, H. 1982. New Australian species of Nymphoides Séguier (Menyanthaceae). Muelleria 5: 35-51.
| status
| collector
| date
| locality
| deposited
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| holotype
| Beauglehole 36345 & Finck
| 20 Jan 1971
| Lake Hill, south-west of Nunniong Plains, East Gippsland, Victoria, grid W6(-3).
| MEL
| | isotype
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| BRI
CANB
MEL
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Nymphoides montana Aston
- Aston, H. 1982. New Australian species of Nymphoides Séguier (Menyanthaceae). Muelleria 5: 35-51.
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Plantae perennes. Stolones fluitantes ad 2 m longi. Laminae foliorum ± circulares, integrae, profunde cordatae, latissime obtusae, (2.5-)4-11 x (2.5-)4-10.5 cm. Inflorescentia laxa, binis floribus pedicellatis binisque bracteis ad nodos; internodis ad 5(-10) cm longis. Flores heterostyli, 5(6)-partiti. Corolla 23-38 mm diametro, flava; lobae alis lateralibus latis perlaciniatis, fimbriaque transversa prope lobae basin papillarum tenuium liberarum formata, praeditae. Capsula ellipsoidea, (5.5-)6.9 x (3-)4-5 mm. Semina 42-90 per capsulam, ellipsoidea valde autem compressa, 1.1-1.55 x 0.8-1.15 x 0.5-0.7 mm (longitudo latitudine sesquilongior, crassitie duplolongior), nigrescentia ad nigra maturitate, nitentia, laevia, caruncula basalis circularis, pallida, tenuis, inconspicua.
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Perennial plants. Stolons floating, to 2 m long. Leaf blades ± circular, entire, deeply cordate, broadly obtuse, (2.5-)4-11 x (2.5-0)4-10.5 cm. Inflorescence lax, with two pedicellate flowers and two bracts at the nodes; internodes to 5(-10) cm long. Flowers heterostylous, 5(6)-parted. Corolla 23-38 mm in diameter, yellow; lobes with broad, very laciniate lateral wings, and furnished with transverse fringe near the base of the lobe, formed of thin, free papillae. Capsule ellipsoid, (5.5-)6.9 x (3-)4-5 mm. Seeds 42-90 per capsule, ellipsoid, however strongly compressed, 1.2-1.55 x 0.8-1.15 x 0.5-0.7 mm (length 1.5 times longer than breadth, twice longer than the thickness), darkening to black at maturity, shining, smooth; basal caruncle smooth, pale, thin, inconspicuous.
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