ALPHABETICAL LIST OF PLANTS 225 



Allium (Liliaceae) 



A genus of bulbous plants with compact heads of flower, and not 

 particularly suitable for the rock garden. They all like rich loam 

 in any position. They are of easy culture and readily increased 

 by offsets. The following are the most suitable : — 



A. acuminatum. — Deep rose. Grows about 9 inches high, and 

 flowers in July. 



A. acutangulum (syn. A. angulosum). — Heads of rosy-purple 

 flowers in July. About 9 inches high. 



A. caeruleum. — Pale blue flowers in May. Grows about 6 to 9 

 inches high. 



A. cyaneum. — Blue flowers ; dwarf habit. 



A. glaucum. — Purplish blue flowers ; glaucous foliage. Grows 

 about 9 inches high. 



A. grandijiorum. — Pendant clusters of reddish-purplish flowers. 

 About 9 inches high. 



A. Holparowskearium. — Heads of light rose-coloured flowers of 

 a good size. 



A. narcissifloru7n (syn. A. pedemontanum). — Pink flowers rather 

 like a chinodoxa in shape. Grows about 6 inches high. 



A. triquetrum. — Pretty heads of drooping white flowers. 



Alyssum (Cruciferae), Madwort 



A numerous genus, of which, however, only the best are worthy 

 of cultivation in the rock garden. They are all of the easiest 

 culture in almost any light soil in a sunny position. Readily 

 increased by cuttings of the young shoots. 



A. alpestre. — Sunny position in rather poor soil. Forms compact 

 tufts of hoary leaves. Only about 3 inches high, the whole plant 

 being covered with minute, shining, star-like hairs. Golden- 

 yellow flowers very freely produced from May to July. A pretty 

 plant. There is a double variety of this which is rather better in 

 colour. 



A. gemonense. — A dwarf-growing variety about 6 inches high. 

 Flowers good, pure pale yellow colour, in corymbs. 



A. Idaeiun. — A sandy soil in sun. A tiny, prostrate species. The 

 small roundish leaves, which grow in pairs down the stem, are of a 

 true silvery colour. Yellow flowers in summer. Fairly hardy, and 

 can be increased by cuttings or division. One of the gems of the 

 genus, and worthy of a choice place in the garden. 



A. moellendorfianum. — Sun and sandy soil. Forms a compact 

 plant 6 inches high, with silvery-grey leaves and yellow flowers 



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