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.
George Russell is the creator of the Russel-hybrids that he developed by crossing Lupinus polyphyllus, Lupinus arboreus and possibly more species. He worked for two decades to develop these brightly coloured hybrids that have been popular garden plants since. Unfortunately they are not long lived here, at least not here in the southern part of the country. They need sun and well drained, slightly acidic soil. They seem to grow better in the northern part of the country, so maybe it's the wet winters here that are the problem.