Water star grass

Family: Pontederiaceae
Scientific name: Heteranthera zosterifolia
Description: Plant Form Mat-forming aquatic plant. Size Up to 50 cm long. Stem Both submerged and floating on surface. Leaves Underwater they are grass-like in star shaped rosette. Above water they are oval shaped with rounded tips, and on stalks up to 8 cm long. Flowers White to pale blue, dark purplish-blue in the centre. With 6 petals. Usually in pairs but sometimes in groups of up to 10. Fruit and Seeds Tiny capsules up to 1 mm across. Containing 8-14 winged seeds. Habitat Wetlands, drains, dams. Distinguishing Features Distinguished from Kidney-leaf mud-plantain (Heteranthera reniformis) by having underwater leaves and oval shaped leaves above surface. Weed Status: Priority Weed Weed Type: Environmental, Common Lifeform: Aquatic

Example images for this weed