198 ALPINE FLOWERS AND ROCK GARDENS. 



black at first, gradually fade away. The Arnebia 

 is not only interesting but pretty. It is easily pro- 

 pagated by cuttings or pieces of roots. It enjoys 

 good loam. The annual species cornuia and Griffithi, 

 both yellow, are worth growing. 



ARNICA MONTANA (See coloured plate).— A 

 yellow-flowered Alpine. Propagated by division. It 

 likes a loamy compost, with peat. 



ARONICUM GLACIALE.—K European plant, now 

 called Doronicum glaciate, six inches to a foot high, 

 with yellow flowers (see coloured plate with Myo- 

 sotis alpestris). Likes gritty soil, but is a difficult 

 plant to grow. 



ARTEMISIA (Wormwood, Southernwood). — This 

 is not a genus of outstanding importance from the rock 

 gardener's point of view, but it includes one or two 

 interesting plants. Abrotanum is the well-known 

 aromatic plant commonly called Southernwood, and 

 Absinthium is the common Wormwood. Neither is 

 of much use for rockeries. Mutellina, which is shown 

 in one of the coloured plates, is suitable. It only 

 grows about six inches high, and bears pale yellow 

 flowers in August. It is a hme-loving plant. Sericea 

 is dwarf, and is a pretty silvery-leaved plant. It is 

 apt to suffer from heavy rain in winter, unless pro- 

 tected with glass. It is an evergreen, and is best 

 propagated by cuttings. 



AS PERU LA (Woodruff).— Pretty, but not of the 

 first importance. Odorata, the sweet Woodruff, is a 

 hardy perennial with white flowers, and may be raised 

 from seed. Azurea setosa is a hardy annual with blue 



