Helen Aston

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Nymphoides spinulosperma, commonly known as marbled marshwort, is an aquatic plant of the family Menyanthaceae native to eastern Australia. It was described in 1997. Nymphoides spinulosperma is a perennial herb with stems up to 1.5 cm (0.6 in) long. The oval to circular leaves are 2.5–12 cm long by 2–11 cm wide, with a heart-shaped (cordate) base. There is a pinkspot at the base of the leaf where it attaches to the petiole. The flowers appear in summer and autumn, up to 5.5 cm across and bright yellow with fringed petals. It has been recorded from isolated waterways in Victoria, New South

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Nymphoides montana, commonly known as marshwort, is an aquatic plant of the family Menyanthaceae native to southeastern Australia.

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Cycnogeton alcockiae, also known as southern water-ribbons, Alcock's water-ribbons or dwarf water-ribbons, is a plant in the arrowgrass family native to south-eastern Australia, where it has been recorded from South Australia, Tasmania and Victoria. It is found in freshwater and brackish wetland communities, in pools, swamps and the margins of streams, where it grows to about 20 cm in height. The fruit is a papery capsule. The species was first described as Triglochin alcockiae by Helen Aston in 1993, with the species epithet honouring Kath Alcock, a botanical collector and orchid artist of

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Ornduffia umbricola, also known as the lax marsh-flower, is a species of plant in the Menyanthaceae family of wetland plants that is endemic to Australia. There are two recognised varieties.

Ornduffia submersa is a species of plant in the Menyanthaceae family of wetland plants that is endemic to Western Australia.

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