ALPHABETICAL LIST OF PLANTS 241 



varieties : — A white form, alba ; a pink form, rosea ; and laucheana^ 

 a bright rosy-pink. 



A. setacea. — Sunny position in vertical crevice. Narrow, acute 

 leaves in dense rosettes. Distinct. Grows 3 inches high, and rosy- 

 pink flowers from April to June. 



Other varieties are advertised in catalogues, but all are very 

 similar to A. 77taritima^ only with flowers of different shades of pink. 



Arnebia echioides, The Prophet Flower 



Partial shade in rich, well-drained loam. A compact-growing and 

 well-known plant, with its primrose-yellow flowers, which open with 

 five black spots on the corolla, gradually fading away. The spikes 

 of flower are about 15 inches high and continually produced. A 

 very charming plant, and well worthy of a spot in the rock garden. 

 Propagated by cuttings in the autumn. 



Arnica (Compositae) 



Hardy, dwarf perennials allied to the Groundsel. Increased by 

 seed or division in spring. 



A. 7ftontana.—'DG.e^, peaty soil. A pretty plant, growing about 

 12 inches high. Tufted habit, with large heads of composite flowers 

 of a rich golden-orange colour. 



A. Fallens. — A sulphur-coloured form. 



A. Chajnissonis. — Rather smaller in habit and flowers ; neither so 

 brilliant in colour nor as large as montana. Also requires deep, 

 peaty soil. 



Aronicum glaciale (syn. Doronicum glaciale) 



Requires rather heavy loam and half shade. Grows about 6 to 

 8 inches high, with big broad leaves, and large, clear, yellow flowers 

 about 2 to 3 inches across, borne on short leafy stems. The flowers 

 are rather like the Doronicums in appearance. 



Artemisia (Compositae), Southernwood, Wormwood 



Dwarf-growing, half-shrubby perennial plants with silvery-grey 

 leaves, but only of secondary value for the rock garden. The 

 following are a selection : — 



A. Baumgartenii. — Sun, in ordinary sandy loam. Silvery foliage 

 growing about 6 inches high. 



A. brachyphylla splendens.—Sun and loam. Silvery leaves, and 

 of creeping habit. A nice little plant. 



A. j-enV^^.— Suitable for a hot spot. Silky white leaves, and 

 of dwarf habit. 



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