Asplenium ceterach officinarumRef.: ASPLE 001
Origin : Atlantic and Mediterranean zones to Caucasus.
Family : Aspleniaceae.
Rusty back fern.
The young fronds emerge covered with white scales. In time, this mature to a rusty colour. Sori with linear indusia are along veins and concealed by the abundant cloak of scales. It is happy in chalky or acidic walls or gravel with sun or light shade. It can't stand stagnant water. Evergreen. Height : 5/15cm. Hardiness : -20°C.
- Foliage : evergreen
- Height : less than 30cm
- Soil type : any, well drained
- Site : walls, rockery, rocks, banks, temporarily dry
- Exposure : half shade, sun
- Shape : flat
- Rhizome : erect
- Hardiness : down to -20°C (-4°F)