Asplenium er ættkvísl um 700 burknategunda í Aspleniaceae ættinni og er af flestum grasafræðingum talin eina ættkvísl ættarinnar. Þetta er breytileg ættkvísl með nokkrum undirflokkum, sem stundum eru flokkaðar sem sér ættkvíslir.
Cushion Spurge has been growing in my garden for many years and has proved hardy and easy to grow. As with other species in the genus, the flowers are small and inconspicuous, but the modified leave bracts are the main feature of the plant, turning a bright yellow before flowering. It can tolerate partial shade and isn't very picky about the soil as long as it's reasonably well drained. It flowers from late May into June.