Family: Salicaceae Scientific name: Salix species Description: Plant Form Deciduous trees or shrubs. Size Up to 30m tall. Stem Vary significantly depending on species. Leaves Vary depending on species, generally spear or lance-shaped. Flowers Exclusively male or female, in a group called a "catkin". Fruit and Seeds Small, develop within capsules and only last for 10 days or so. Habitat Along permanent watercourses or in seasonally wet areas and gullies. Distinguishing Features Most species are hybrids and can't be confidently identified to species level. Impacts Use much more water than native species, alter water flow, cause erosion, restrict stock water access.