294 



THE BOOK OF GARDENING. 



Fig. 173.— Geum 

 ' montanum. 



foliage, and bears erect bell-shaped flowers with yellow 

 marks inside ; it grows from 3m. to 6in. high, and flowers 

 between March and June. G. asckpiadea grows i8in. high,. 

 and produces long terminal clusters of purplish-blue flowers 

 during July and August. It succeeds in a 

 moist, shady situation of either the rockery 

 or the open border. A white variety of 

 this is also cultivated. G. verna is a gem, 

 and in districts where it does well, forms 

 dense tufts of glistening green_ foliage, 

 covered with flowers of a brilliant blue 

 colour. It grows only 3b. ' high, and 

 flowers in April and May. 



Geum montanum (Fig. 173) is an 

 excellent rock plant,, growing from 6in. 

 to 15m. high, and producing an abun- 

 dance of golden yellow flowers from 

 June to August. 



Gnaphalium leontopodium.— See 

 Leontopodium alpinum. 



Gypsophila cerastoides is a dwarf, 



though handsome, rock plant, growing 



from 3in. to 6in. high, and flowering during May and June ; the 



flowers are white, veined with pink. Propagated by seeds, 



cuttings, or division. 



Iberis. — See " Spring-Bed- 

 ding Plants." 



Leontopodium alpinum 

 (Gnaphalium Leontopodium), 

 the Edelweiss, is a remark- 

 able alpine, growing 6in. high, 

 and producing terminal heads 

 of flowers enveloped in white, 

 woolly bracts (Fig. 174) in 

 June and July. It should be 

 planted in sandy, stony soil, 

 in exposed positions. Pro- 

 pagation is effected by seeds 

 or by careful division of the 

 old plants. 



Linaria alpina is a 

 charming little rock plant of 

 neat, trailing habit, growing from 3m. to 6in. high, and flowering 

 from June to September. The flowers are of a purple colour, 

 with orange centres. 



Fig. 174. — Leontopodium alpinum. 



