264 OUR ROCK-GARDEN 



some having white flowers, others rose-coloured, 

 or various strengths of yellow. 1 On Plate XL I. 

 the right-hand figure is one of these fair aliens, 

 the A. rupestris. It forms a charming addition to 

 one's rock-garden. Another very attractive white 

 flower that is equally desirable is the plant that 

 companions it on the Plate, the Iberis sempervirens, 

 one of the many species of candy-tuft. Yet another 

 achillea may be found on Plate L. The particular 

 plant from which our illustration was taken hailed 

 originally from Switzerland, but the plant the A. 

 tomentosa is also a member of the British flora. 

 It is, however, but rarely met with, and can make 

 no claim to be really indigenous. It was at one 

 time much cultivated from a belief in its medical 

 efficacy. 



The tansy was one of the valued medical herbs 

 of our forefathers, or perhaps, more especially, of 

 our foremothers. " Tanzie " appears twice, we 

 see, in Tusser's lists of plants to be cultivated. 

 Amongst the " herbes for the kitchen," and amongst 

 the "strowing herbes/' these latter being in place 

 of carpets as a floor-covering. Tusser's selection 

 includes " Bassel, baulme, isop, lauender, sage, 



1 A. cegvptiaca has its flower-heads of a pale yellow, while 

 A. filipendula, A. aurea, or A. tomentosa are of a deeper 

 yellow. They vary considerably, too, in the leaf-colourings. 

 A. umbellata has, for example, very finely cut and minute 

 leaves of quite silvery sheen. 



