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Genus Ornduffia Family Menyanthaceae

Description: Aquatic or wetland perennial herbs.

Radical leaves erect or floating, petiolate, with sheathing bases; laminae simple, ovate or ellipsoid, margins entire to crenate-dentate.

Inflorescence paniculate; flowers 1–3 per node. Calyx persistent, 5-lobed; corolla yellow or white, gamopetalous, 5-lobed, rotate, throat fimbriate, margins entire or serrulate; stamens 5, alternate with corolla lobes, inserted on the corolla tube at the junction of the lobes. Ovary unilocular, ovules 11 or more.

Fruits a dehiscent capsule with 4 valves. Seeds ellipsoid.


Distribution and occurrence:

Australia 8 species; NSW 1 species.

Text by Louisa Murray
Taxon concept: Tippery, N.P., & Les, D.H. (2009) A New Genus and New Combinations in Australian Villarsia (Menyanthaceae). Novon 19: 404-411.

One species in NSW: Ornduffia reniformis

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