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.
The Crescendo series are P. elatior hybrids in a variety of colours. I was expecting more variable pink colours for a variety named 'Pink Shades', but all the plants have flowers in this hot pink colour. It is very pretty and hopefully the plants will stick around for a while. P. elatior hybrids have a tendency to be rather tender and short lived. I planted two plants outside last summer and they flowered well this spring, so they have one winter under their belt. Hopefully they'll flower again come spring.