This is Curculigo capitulata, also known as palm grass, and Whale Back. This plant is used as an ornamental, because the ribbed leaves are very attractive, but it also has many practical uses. This plant likes to live in a tropical environment and in light shade. The yellow star shaped flowers are intriguing when they come out in the middle of the Summer, and the fibers from this plant are used to make several different things. Two notable products are nets and fake hair. The fruit from this plant is also edible, as a little added bonus. USDA Hardiness Zones 10 to 11.