Cultivating Plants in Walk. 



63 



Parietaria 



— officinalis* 

 Poa 



— rigida 



— compressa 

 Phalaris 



— phleoides 

 Phleum 



— paniculatum 



— nodosum 

 Papaver * 



— argemone 



— rheas 



— dubium 

 Pteris 



— crispa* 

 Polypodium * 



— vulgare 



— fontanum 



— cristatum 



— rhaeticum 



— fragile 



— dryopteris 

 Pinus 



— sylvestris* 



Growing to a considerable tree, 

 like the birch, out of solid 

 stone walls. 

 Rhodiola 



— rosea* 

 Rosa 



— spinosissima * 



And suspected to be true of some 

 others. 

 Rubus 



— fruticosus* 



— caesius * 

 Probably more. 



Reseda 



— luteola * 



— lutea * 



Of plants not native, the Reseda 

 odorata will also grow in this 

 manner from seed, and pro- 

 duce triennial plants. I believe 

 I may add the Rosmarinus 



officinalis among foreign spe- 

 cies. 

 Sagina 



— procumbens 



— apetala 

 Statile 



— armeria * 

 Solidago 



— virgaurea* 



— cambrica* 

 Sonchus 



— oleraceus 

 Silene * 



— nutans 



— maritima 

 — ■ armeria 



— acaulis 

 Sempervivum 



— tectorum* 



And probably all that may prove 

 hardy. 

 Sedum * 



— album 



— acre 



— . sexangulum 



— anglicum 



— dasyphyllum 



— reflexum 



— rupestre 



And doubtless every hardy spe- 

 cies in this genus. Many of 

 them are very ornamental. 

 Sysimbrium 



— tenuifolium 



— murale 



— sophia 



— iris * 

 Senecio 



— vulgaris 



— squalidus 



— viscosa 

 Salvia 



— verbenaca * 

 Saxifreaga * 



— tridactylitis 



— hypnoides 



