Bush Spinifex Black by Geraldine Riley. Spinifex in a native species of grass that is found in wet areas, usually on the Australian coasts. The roots of spinifex grass are very strong and go quite deep into the earth, keeping sand from blowing away. The powerful roots keep the sand in place. The wonderful hues and dynamic, organic shapes make this multi-colored authentic Aborigine-designed fabric from M&S Textiles ideal for quilting, home decor and wearable art.