272 



THE BOOK OF GARDENING. 



G. chiloense (syn. G. coccineum) grows 2 ft. high, and bears 

 numerous bright scarlet flowers from May to September ; the variety 

 qrandiflorum plenum has large semi-double flowers. Heldnichii 

 (1 ft.), orange-red, is a recent addition that should not be omitted. 



Gypsophila paniculata is a striking plant of gauze-like 

 appearance, and worthy of a place in the best herbaceous border. 

 It forms a dense mass, 2 ft. high, and during July and the late 



summer is covered with myriads of 

 small whitish flowers, which are 

 invaluable for cutting purposes. 



Harpalium. — See Helianthus. 



Heleniums are valuable com- 

 posite plants for back positions 

 in mixed borders, or for planting 

 in shrubberies ; they have large 

 yellow flowers, which remain' in 

 full beauty for a long time, and 

 are therefore much in demand 

 for cutting. Increased by seeds 

 or by division. H. autumnak 

 grows 3ft. high, and flowers 

 during July, August, and 

 September ; the golden- 

 yellow flowers, which- are 

 3in. across, are produced in 

 abundance. The variety granii- 

 florum is similar in habit to the 

 type, but has much larger flowers. 

 H. Bolanderi grows 2^ft. high, 

 and is a showy plant producing 

 rich yellow flowers with dark 

 brown disks. It flowers in July 

 and August. H. Hoopesii is a 

 grand border plant, 2ft. high, and 

 bearing clustered heads of bright 

 yellow flowers, each of which is 



2in. across. 

 Fig. 156.— Helianthus 



multiflorus. Helianthus (Sunflower). This 



genus contains several showy 

 perennials suitable for the back of the herbaceous border or for 

 shrubberies, &c. Increased by seeds or by division. H. multi- 

 florus (Fig. 156) is an old garden plant with large .yellow flowers; it 

 reaches a height of 4ft., and flowers from July to September, 

 The plant generally grown in gardens is the double one— /w* 

 pleno. H. rigidus, formerly known as Harpalium rigidum, is a 

 well-known and attractive plant, growing from 3ft. to 4ft. high, 



