'2'2 GLENNYS HANDBOOK 



turbed for years. Propagated by division of the tubers. A. 

 tuberosa, flowers pink, in August. 



APOCYNUM. Dog's-bane. [Apocynaceae.] Acrid 

 hardy herbaceous perennials, of rambling growth, with small 

 cup-shaped flowers, not very showy. Common soil. In- 

 creased by division. 



APONOGETON. [Fluviales.] Curious and elegant per- 

 ennial water plants. One or two require a stove temperature, 

 others a greenhouse. A. distachyon is found to be hardy if 

 kept during winter in deepish water. The tender kinds in 

 pots set into a tank or tub. Soil, peat and loam. Propagated 

 by seeds, which should be sown in spring in the same kind of 

 soil, and the pots set under water : they also increase by offsets. 

 A. distachyon, A. angustifolium, and A. juncifolium, flower 

 white. 



AQUILEGIA. Columbine. [Ranunculaceae.] Hand- 

 some hardy perennials. Common garden soil ; good turfy 

 loam for the choicer sorts. Propagated by seeds or by 

 di\'ision. The seed of the common kinds may be sown in 

 beds thinly in May ; the young plants, when strong enough, 

 planted out six inches apart every way. If they are to 

 bloom in beds they should be nine inches apart, and eighteen 

 inches from row to row% When they bloom pull out and 

 destroy all the single and ugly ones, and, if desirable, pro- 

 pagate the better ones. The common Columbine has sported 

 into a variety of colours, and some of its double varieties are 

 very beautiful. A. glandulosa, flowers white and blue, in 

 June. A. macrantha, flowers cream-coloured, tinged with 

 pink. A. Sibirica, flowers blue and white. There are now 

 many garden varieties, 



ARABIS. Wall Ckess. [Cruciferae.] Dwarf evergreen 

 hardy perennials, with cruciferous flowers, particularly adapted 

 for rockwork. Common soil. Propagated by cuttings, planted 

 in a shady border under hand-glasses, any time during 

 summer. The annuals, which are insignificant, are raised 

 from seeds sown in March. A. albida, flowers white, in 

 February. A. carulea, flow^ers pale blue, in June. A. rosea, 

 flowers rose, in April. There are pretty variegated kinds of 

 A. albida, prcBcox, and lucida. 



ARALIA. [Araliacese.] Hardy deciduous shrubs, and tall- 



