Philydrum lanuginosum

Philydrum lanuginosum, or Woolly Waterlily, is an erect, perennial aquatic herb in the family Philydraceae, native to Australia. It is typically found in shallow freshwater wetlands, although its distribution is limited to a few scattered locations across Victoria. This species was once thought to be extinct in the Melbourne region until it was rediscovered during the Waterways Development, underscoring its conservation significance.

Woolly Waterlily grows in a tufted form, with strap-like leaves up to 45 cm long. The foliage has a somewhat pithy texture and is often tinged with red at the base, adding subtle colour to its aquatic setting. From December to March, it produces distinctive yellow flowers with two prominent upright petals, resembling a combination of lilies and irises but with fewer petals. These flowers are borne on woolly flowering stalks that range from 25 to 75 cm tall, adding a striking vertical element to wetlands. The fruit is also woolly, covered in soft white hairs, which enhances its unique appearance.

Thriving in shallow, still freshwater habitats, Philydrum lanuginosum is well-suited for biodiversity-focused wetland restoration and conservation efforts. Its tufted growth helps stabilize sediments, while its flowers provide aesthetic value and support for local biodiversity, including pollinators and aquatic wildlife.

With its elegant two-petalled flowers, woolly stalks, and cultural significance as a rediscovered species, Philydrum lanuginosum is a valuable addition to conservation projects and water-sensitive landscape designs. Its rarity and distinctive features make it an important species for protecting and enhancing Victoria’s unique wetland ecosystems.