FERN ROCKERIES INDOORS 97 



be easily cut and bent is imperative for pin- 

 ning the moss over the fern roots; every plant 

 should be thus carpeted to prevent rapid 

 evaporation of moisture and to beautify 

 both rock and stone as we see it everywhere 

 in Nature. 



My stock for filling the beautiful crystal 

 consisted of good specimens of the purple 

 cliff brake (Pellcea atropurpurea), wall rue 

 (Asplenium ruta-muraria), the maidenhair 

 spleenwort (Asplenium Trichomanes'), an 

 abundance of walking leaf (Camptosorus 

 rhizophyllus) — comrades all in the limestone 

 cliff — lip fern (Cheilanthes), hart's tongue 

 (Phyllitis), with the common polypody {Poly- 

 podium vulgare) and dormant roots of phegop- 

 teris complete the fern list. Sundry wild 

 flowers are also in evidence. Mosses galore 

 are essential; a few lichens and a basket of 

 leaf mould mixed with disintegrated lime- 

 stone are all the material we need ask of 

 Nature. 



The combination of walking leaf and wall 

 rue is to my mind particularly pleasing. The 



